Merge pull request #19 from enriquein/master

Win: Added clean support for 64bit windows. Updated README. Mac: Fixed issue #12
Update README.md

Added credit to @enriquein
Fixed default keymap path on windows
Python 3 compatibility
Removes delay from Chrome applescript
Active browsers is now an instance var that 
comes in a param of __init__
Check for active browsers every time the command
runs
Merge pull request #22 from ohgyun/master

Fixed default keymap path on windows
Adds refresh for WebKit on OS X
Update reademe file
Update readme
Linux support using 'xdotool' (fixes issue #29)
Closes #36: Add support for Yandex.browser
Updates readme to include Yandex reference.
Removes print statements
Update __init__.py

Added support for Firefox
Fix running browser detection on Mavericks

This fix will properly detect Safari and Webkit
unde Mac OS X 10.9 Mavericks
Change command to super closes #39
Chrome refresh not working on Windows - fixed.
Merge pull request #44 from leafbird/master

Chrome refresh not working on Windows - fixed.