Fix issue 351: Vertical text alignment

NIAttributedLabel.verticalTextAlignment stopped working correctly in
commit c856b9b.
Creating a branch in which we'll just suppress compiler warnings for now, until the new OS is public and nimbus is properly updated.
typo
Fixing compiler warnings due to enabling CLANG_WARN_OBJC_EXPLICIT_OWNERSHIP_TYPE
Fixing compiler warnings from enabling CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF.
Merge branch 'master' into barz-ios7
Merge branch 'master' into barz-ios7
Merge pull request #374 from mmorearty/patch-vertical-text-alignment

Fix issue 351: Vertical text alignment
Implement indexPathForObject: on NITableViewModel and NICollectionViewModel.
Add function docs for indexPathForObject:
Merge pull request #451 from jverkoey/indexPathForObject

Implement indexPathForObject: on NITableViewModel and NICollectionViewModel.
Fix uri scheme for Google Chrome
Merge pull request #469 from ahmet/master

Fix uri scheme for Google Chrome
Add vertical dragging support for NIOverlay.
Merge pull request #475 from jverkoey/debug_view

Add vertical dragging support for NIOverlay.
Implement -[NITitleCellObject init] and make it call initWithTitle:image:
so that calls to init in descendant classes don't skip designated initializers
along the inheritance hierarchy.
Merge pull request #477 from jverkoey/NITitleCellObjectInit

Implement -[NITitleCellObject init]
Set edgesForExtendedLayout for iOS7
Merge pull request #480 from dlackty/fix-iOS7-web-controller

Fix NIWebController view frame under iOS7
Specify C external linkage for NISnapshotRotation