Merge pull request #30 from StephenLeeUSTC/master

In Advent of code.ipynb, day8

ipynb/Advent of Code.ipynb

@@ -959,7 +959,7 @@
     "\n",
     "def run(commands, screen):\n",
     "    \"Do all the commands and return the final pixel array.\"\n",
-    "    for cmd in Input(8):\n",
+    "    for cmd in commands:\n",
     "        interpret(cmd, screen)   \n",
     "    return screen\n",
     "\n",