Add api to set neutralButton colors
Fix typo
Remove unwanted logs
Fix sample too
Merge pull request #24 from emartynov/master

Removed allowBack because this attribute is not required by library
Merge pull request #23 from Tolriq/typo

Fix typo
Merge pull request #22 from Tolriq/logs

Remove unwanted logs
Merge pull request #21 from Tolriq/colors

Add api to set neutralButton colors