added callback for custom button being pressed
minor code improvements
Merge branch 'master' of https://github.com/velga/ActionSheetPicker-3.0 into velga-master
Code cleanup
added 2 tests for custom button with actionBlock
added few tests to check new functionality (action block/selector on custom button)
move title to instance variable
Merge branch 'master' into velga-master
Merge pull request #2 from skywinder/velga-master

move title to instance variable
merge
added tests for new functionality(callback block/selector on custom button) for ActionSheetLocalePicker and ActionSheetDatePicker
Added new info to README.md
wrong readme commit
Added info about custom buttons to README.md
Merge branch 'master' of https://github.com/velga/ActionSheetPicker-3.0
fix typo
working example with test "custom button pressed"
fixed value issue in readme.md
tests to check functionality of "custom button pressed"
minor code improvements in tests