Documentation, code-formatting, and refactoring.

* Added some docs, updated existing docs.
* Use single-quotes for strings when possible.
* Color.pexception() prints exception and stack trace.

Wifite.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python
 
 from wifite import wifite
-
-wifite.run()
+wifite.entry_point()