Added GUI

+ Easy to use Interface
+ No hard to remember commands
+ Tkinter based ttk interface for simplicity and beauty
+ Interactive File Browser
+ The double-starred fields are optional and can be left blank
+ Remember Me Check Button added
+ doesn't affect existing users as GUI is totally optional

![dl](https://f.cloud.github.com/assets/5072381/1027118/23a77ac0-0e6b-11e3-8bb1-758892f39da2.png)

Feedback would be much appreciated.