Removed unnecessary css. Moved board and keypad to components folder.
Moved Board and Keypad JS into components file. Updated File Structure in README.
Removed unnecessary module load. Added a dollar sign in front of the variable names if they are jQuery objects.
Divided functions into shorter functions in Board. Removed magic numbers.
Used promises for removing callbacks. Moved key animation functions to Keypad module.
Update README: jQuery promise.
Merge remote-tracking branch 'origin/refactoring'