Add interpolation and file loading
Update grunt-travis-matrix
Add test for file
Add test for opts
Finish up refactoring tests
Allow context to be loaded from a file
Refactor some of builder into a common load function
Allow alias file
Add peer and optional dependencies
Remove inteprolation. Grunt does this.
Update docs, load multiple files, allow glob patterns, and don't blow up when files are missing
More documentation, plus always look for canonical files and merge all existing options with passed in filename options with canonical file options
2.1.0