Fixed setTime method
Changed timer updating method, not it's not showing values if they are empty (no zeros hours and minutes)
improved and fixed bugs for 'update' method in timer directive, removed isEdit state
started with edit mode, edit method stops timer and shows the timer
re-factored setting time in timer helper, added stop button
added simple keyboard helper to determine whether number was typed
re-factored keyboard helper
finished with keyboard events
finished with basic keyboard helper
Merge pull request #7 from mpodriezov/master

Improved timer helper, added KeyBoard helper, improved timer directive