Added podspec and screenshots into the project.
Merge pull request #9 from dblock/podspec

Added podspec and screenshots into the project.
Fixed crash in layout without footer on iOS8, enabled snapshot tests.
Merge pull request #12 from dblock/snapshot-tests-and-footer-fix

Fixed crash in layout without footer on iOS8, enabled snapshot tests.
Fixed header and footer support.
Added support for header and footer views via ARCollectionViewMasonryLayoutDelegate, closes #8.
Merge pull request #13 from dblock/snapshot-tests-and-footer-fix

Fixed header and footer support.
Bumped to 1.0.0.