tagging for 2.2.12-dev

Public release/2.2.10 (#1548)

Fix ORKNavigationContainerView so that it does not call didMoveToWindow from tintColorDidChange
Bumped version to 2.2.10

Tagging for 2.2.9-dev

2.1.1 Release

-Bug fixes
-New ORKAccuracyStroopStep
-AudioStep now allows for audio recording
-New Styles for ORKDontKnowButton
-General layout and UI improvements

marker

Updating podspec, readme and project settings for ResearchKit 2.0 sta…

…ble release

Fix for CocoaPods

Convergence