Add defined
Fix doc
Add copy of CZML files to Specs/Data directory

This allows the Specs to run on the website and makes sure we don't reach out above the Specs directory.
Merge pull request #902 from andre-nunes/issue893

Add defined()
Remove extra line breaks.
Fix formatting.
Merge pull request #903 from AnalyticalGraphicsInc/isolateSpecs

Add copy of CZML files to Specs/Data directory
Merge remote-tracking branch 'origin/master' into batching
Fix JSHint warnings
More reference doc
Finish Sandcastle example
Polygon doc
Merge branch 'batching' into perInstanceAttributes
Revert changes to GeometryPipeline, Context, and VertexLayout. Add optional parameter to createVertexArrayFromGeometry for already created vertex array attributes.