Fix picking coordinates in 2D when map is rotated.
Add tests for picking and handling mouse input when 2D map is rotated.
Fix picking in 2D with rotated map.
Add tests for picking in 2D.
Update CHANGES.md.
Merge branch 'master' into pickCoordinates2D
Merge branch 'pickCoordinates2D' into picking

Conflicts:
	Source/Scene/Scene.js
	Specs/Scene/PickSpec.js
Replace getElementsByTagName with a case-insensitive regex to search for TileFormat
Merge branch 'master' into pickCoordinates2D
Merge branch 'pickCoordinates2D' into picking
Add regex search for TileSets as well
Handle casing differences in XML
Add test for casing differences
Update CHANGES.md
Small fix in CHANGES.md
Merge remote-tracking branch 'origin/master' into tagname-regex

Conflicts:
	CHANGES.md
Merge branch 'master' into pickCoordinates2D
Merge branch 'pickCoordinates2D' into picking
Merge pull request #1359 from AnalyticalGraphicsInc/pickCoordinates2D

Pick coordinates in 2D
Merge pull request #1361 from AnalyticalGraphicsInc/picking

Picking in 2D