TimeBlockClickListener for creating new events by detecting where the click selection was made on the screen.
Added time block selection in the sample app
refactored duplicate code for time selection
can now set the initial starting hour to display
Merge branch 'master' of https://github.com/alamkanak/Android-Week-View

Conflicts:
	library/src/main/java/com/alamkanak/weekview/WeekView.java
refactored some code
merge forked branck by SteveHanna.