Rebind the search prefix to "C-c /"

C-c / t   google-this
C-c / w   google-word
C-c / s   google-symbol
Merge pull request #2 from bdsatish/master

Redind keys to adhere to Emacs minor-mode conventions
Changed the keybinding to be standards compliant. And changed the comments.
changed readme for new keybind