Merge branch 'release/1.1.0' into develop
Localize error messages
Strip HTML tags out of error messages
Add CHANGELOG.md
Update documentation
Simplify preferredLocalizations code
Smaller headings
Explicitly set the Accept-Language HTTP header

YouTube prefers the `Accept-Language` HTTP header over the `hl` URL parameter
Setting preferredVideoQualities to nil restores its default values
Update README
Fix warnings
Better demo project, also iOS 7 compatible
Update screenshot with iOS 7 player
Do not search the include directory recursively

For some unknown reason, the build fails the first time when searching the include directory recursively. #import <XCDYouTubeVideoPlayerViewController/XCDYouTubeVideoPlayerViewController.h> instead solves this problem.
Update CHANGELOG
Use workspace instead of subproject
Do not repeat the version number in the podspec
Delete "Fetch the video identifier asynchronously" demo code in README

This code is available in `DemoAsynchronousViewController.m`
Version 1.1.1
Merge branch 'release/1.1.1'