jsHint Integrated with editor.

Only remaining task is to add a dialog on clicking jsHint Button.
Currently it prints the stuff (error/warnings) to console.
jsLint now Shows status/error report in Dialog.
Includes lot of Modification.

1) jsHint Handling removed since ACE Editor automatically handles
them.
2) UI Changed: Two Buttons now. Solves Issue #17.
3) The Save Dialog is quite responsive now.
Made more useful.
Markdown format.
Image added.
Path corrected.
Path resolved.
Resolved again.
Features Section Added.
License Added.
GNU GPLv3
Markdown Format.
Description Added.
Typo corrected.
Merge pull request #14 from psibi/master

jsHint Integrated.