Added SelectionMode as an Enum and implemented SelectionMode.PERIOD to select two dates.
Corrected indention and put Selectionmode in CalendarpickerView
Added another SelectionMode which also selects all days in between the selected period.
included feedback stuff of @edenman and some optimizations
merged fix-broken-test
merged fix-set-selected
Merge remote-tracking branch 'upstream/master'
extended example
Merge pull request #35 from tadfisher/master

Add listener to set selectability of arbitrary dates
Merge pull request #23 from tobiasschuerg/master

Period selection added.
Cleanup some API, add some tests/validation
Merge pull request #37 from square/edenman/first-pass-at-API-cleanup

Cleanup some API, add some tests/validation
Fix my last-second refactoring
Merge pull request #38 from square/edenman/fix-sample

Fix my last-second refactoring
Add invalid date selection listener