README + Basic Concepts updated

OnlineCompiler.html

@@ -0,0 +1,23 @@
+<html>
+<body background="html/bgimage.jpg">
+<font size="8"> Online C++ Compilers </font>
+<font size="6">
+<br>
+<br>
+<br>
+<a href="https://wandbox.org/"> Wandbox </a> <font size="5">(support different compilers)</font>
+<br>
+<br>
+<br>
+<a href="http://cpp.sh/"> C++ Shell </a>
+<br>
+<br>
+<br>
+<a href="https://www.onlinegdb.com/online_c++_compiler"> OnlineGdb </a>
+<br>
+<br>
+<br>
+<a href="https://ideone.com/">  IDEone </a>
+</font>
+</body>
+</html>

README.md

@@ -108,12 +108,12 @@ Modern C++ Programming Course (UNIVR) - C++11/C++14
 
 ### todo ###
 
-01. Basic Concepts I -> Catastrofic Cancellation (loss of significance)
+* (01) Basic Concepts I -> Catastrofic Cancellation (loss of significance)
-09. Code Organization and Conventions -> optimize the compile time
+* (09) Code Organization and Conventions -> optimize the compile time
-11. Advanced Concepts -> volatile keyword
+* (11) Advanced Concepts -> volatile keyword
-12. Code Optimization
+* (12) Code Optimization
-B. Appendix
+* (B) Appendix
-C++17
+* C++17
 
 ### Reporting bugs and contributing ###