Unnecessary whitespaces removed
Unnecessary files removed
Small enhancements and changes required for extension
Extension specific files added
Dont change body background

Whitespaces removed
README updated.
icons, name and desc updated.
icons updated.
initializer function name changed
persistent option specified
Extension link added
Readme updated
Small enhangement.
Permission issue fixed.
Description updated
Mathes removed from manifest.json
Version updated
Merge branch 'release/0.6'

* release/0.6:
  Version updated
  Mathes removed from manifest.json
  Description updated
  Permission issue fixed.