diff --git a/README.md~ b/README.md~
deleted file mode 100644
index 8e8f326..0000000
--- a/README.md~
+++ /dev/null
@@ -1,24 +0,0 @@
-#[Kalman Filters and Random Signals in Python][http://github.com/rlabbe/Kalman-Filters-and-Random-Signals-in-Python]
-
-this is a book BLAH BLAH BLAH
-
-Contents
------
-
-[**Introduction**] foo
-
-[**Chapter 1: You've got me]()
-  tells you this and that. and the other thing.
-
-Reading the book
------
-
-
-Installation
------
-
-License
------
-
-Contact
------
diff --git a/book_format.py~ b/book_format.py~
deleted file mode 100644
index 3bbb01b..0000000
--- a/book_format.py~
+++ /dev/null
@@ -1,39 +0,0 @@
-# -*- coding: utf-8 -*-
-from IPython.core.display import HTML
-import matplotlib.pylab as pylab
-
-def load_style():
-    styles = open("./styles/custom2.css", "r").read()
-    return HTML(styles)
-
-pylab.rcParams['axes.color_cycle'] = '348ABD, 7A68A6, A60628, 467821, CF4457, 188487, E24A33'
-pylab.rcParams['lines.linewidth'] = 1
-
-pylab.rcParams['lines.antialiased'] = True
-pylab.rcParams['patch.linewidth'] = 0.5
-pylab.rcParams['patch.facecolor'] = '348ABD' #blue
-pylab.rcParams['patch.edgecolor'] = 'eeeeee'
-pylab.rcParams['patch.antialiased'] = True
-pylab.rcParams['font.family'] = 'monospace'
-pylab.rcParams['font.size'] = 10.0
-pylab.rcParams['font.monospace'] = 'Andale Mono, Nimbus Mono L, Courier New, Courier, Fixed, Terminal, monospace'
-pylab.rcParams['axes.facecolor'] = 'eeeeee'
-pylab.rcParams['axes.edgecolor'] = 'bcbcbc'
-pylab.rcParams['axes.linewidth'] = 1
-pylab.rcParams['axes.grid'] = True
-pylab.rcParams['axes.titlesize'] = 'x-large'
-pylab.rcParams['axes.labelsize'] = 'large'
-pylab.rcParams['axes.labelcolor'] = '555555'
-pylab.rcParams['axes.axisbelow'] = True
-pylab.rcParams['axes.color_cycle'] = '348ABD, 7A68A6, A60628, 467821, CF4457, 188487, E24A33'
-pylab.rcParams['xtick.major.pad'] = 6
-pylab.rcParams['xtick.minor.size'] = 0
-pylab.rcParams['xtick.minor.pad'] = 6
-pylab.rcParams['xtick.color'] = '555555'
-pylab.rcParams['ytick.direction'] = 'in'
-pylab.rcParams['legend.fancybox'] = True
-pylab.rcParams['figure.facecolor'] = '0.85'
-pylab.rcParams['figure.edgecolor'] = '0.50'
-pylab.rcParams['figure.subplot.hspace'] = 0.5
-pylab.rcParams['figure.figsize'] = 12,6
-
diff --git a/styles/custom2.css~ b/styles/custom2.css~
deleted file mode 100644
index f10a253..0000000
--- a/styles/custom2.css~
+++ /dev/null
@@ -1,204 +0,0 @@
-<style>
-    div.cell{
-        width: 850px;
-        margin-left: 2% !important;
-        margin-right: auto;
-    }
-    h1 {
-        font-family: 'Open sans',verdana,arial,sans-serif;
-	}
-	
-    div.input_area {
-        background: #F6F6F9;
-        border: 1px solid #586e75;
-    }
-
-    .text_cell_render h1 {
-        font-weight: 200;
-        font-size: 40pt;
-        line-height: 100%;
-        color:#c76c0c;
-        margin-bottom: 0.5em;
-        margin-top: 1em;
-        display: block;
-        white-space: nowrap;
-    } 
-    h2 {
-        font-family: 'Open sans',verdana,arial,sans-serif;
-        text-indent:1em;
-    }
-    .text_cell_render h2 {
-        font-weight: 200;
-        font-size: 20pt;
-        font-style: italic;
-        line-height: 100%;
-        color:#c76c0c;
-        margin-bottom: 1.5em;
-        margin-top: 0.5em;
-        display: block;
-        white-space: nowrap;
-    } 
-    h3 {
-        font-family: 'Open sans',verdana,arial,sans-serif;
-    }
-    .text_cell_render h3 {
-        font-weight: 300;
-        font-size: 18pt;
-        line-height: 100%;
-        color:#d77c0c;
-        margin-bottom: 0.5em;
-        margin-top: 2em;
-        display: block;
-        white-space: nowrap;
-    }
-    h4 {
-        font-family: 'Open sans',verdana,arial,sans-serif;
-    }
-    .text_cell_render h4 {
-        font-weight: 300;
-        font-size: 16pt;
-        color:#d77c0c;
-        margin-bottom: 0.5em;
-        margin-top: 0.5em;
-        display: block;
-        white-space: nowrap;
-    }
-    h5 {
-        font-family: 'Open sans',verdana,arial,sans-serif;
-    }
-    .text_cell_render h5 {
-        font-weight: 300;
-        font-style: normal;
-        color: #1d3b84;
-        font-size: 16pt;
-        margin-bottom: 0em;
-        margin-top: 1.5em;
-        display: block;
-        white-space: nowrap;
-    }
-    div.text_cell_render{
-        font-family: 'Open sans',verdana,arial,sans-serif;
-        line-height: 135%;
-        font-size: 125%;
-        width:750px;
-        margin-left:auto;
-        margin-right:auto;
-        text-align:justify;
-        text-justify:inter-word;
-    }
-    div.output_subarea.output_text.output_pyout {
-        overflow-x: auto;
-        overflow-y: scroll;
-        max-height: 300px;
-    }
-    div.output_subarea.output_stream.output_stdout.output_text {
-        overflow-x: auto;
-        overflow-y: scroll;
-        max-height: 300px;
-    }
-    code{
-      font-size: 78%;
-    }
-    .rendered_html code{
-    background-color: transparent;
-    }
-    ul{
-        margin: 2em;
-    }
-    ul li{
-        padding-left: 0.5em; 
-        margin-bottom: 0.5em; 
-        margin-top: 0.5em; 
-    }
-    ul li li{
-        padding-left: 0.2em; 
-        margin-bottom: 0.2em; 
-        margin-top: 0.2em; 
-    }
-    ol{
-        margin: 2em;
-    }
-    ol li{
-        padding-left: 0.5em; 
-        margin-bottom: 0.5em; 
-        margin-top: 0.5em; 
-    }
-    ul li{
-        padding-left: 0.5em; 
-        margin-bottom: 0.5em; 
-        margin-top: 0.2em; 
-    }
-    a:link{
-       font-weight: bold;
-       color:#447adb;
-    }
-    a:visited{
-       font-weight: bold;
-       color: #1d3b84;
-    }
-    a:hover{
-       font-weight: bold;
-       color: #1d3b84;
-    }
-    a:focus{
-       font-weight: bold;
-       color:#447adb;
-    }
-    a:active{
-       font-weight: bold;
-       color:#447adb;
-    }
-    .rendered_html :link {
-       text-decoration: none; 
-    }
-    .rendered_html :hover {
-       text-decoration: none; 
-    }
-    .rendered_html :visited {
-      text-decoration: none;
-    }
-    .rendered_html :focus {
-      text-decoration: none;
-    }
-    .rendered_html :active {
-      text-decoration: none;
-    }
-    .warning{
-        color: rgb( 240, 20, 20 )
-    } 
-    hr {
-      color: #f3f3f3;
-      background-color: #f3f3f3;
-      height: 1px;
-    }
-    blockquote{
-      display:block;
-      background: #fcfcfc;
-      border-left: 5px solid #c76c0c;
-      font-family: 'Open sans',verdana,arial,sans-serif;
-      width:680px;
-      padding: 10px 10px 10px 10px;
-      text-align:justify;
-      text-justify:inter-word;
-      }
-      blockquote p {
-        margin-bottom: 0;
-        line-height: 125%;
-        font-size: 100%;
-      }
-</style>
-<script>
-    MathJax.Hub.Config({
-                        TeX: {
-                           extensions: ["AMSmath.js"]
-                           },
-                tex2jax: {
-                    inlineMath: [ ['$','$'], ["\\(","\\)"] ],
-                    displayMath: [ ['$$','$$'], ["\\[","\\]"] ]
-                },
-                displayAlign: 'center', // Change this to 'center' to center equations.
-                "HTML-CSS": {
-                    styles: {'.MathJax_Display': {"margin": 4}}
-                }
-        });
-</script>