Use @classdesc notation (continuing #2178)
Add sinon as a dev dependency
Add mocha and mocha-phantomjs as dev dependencies
Add jquery as a dev dependency
Update test readme
Extend expect.js rather than modify the source
Unused extensions
Lint
Doc flip
Merge pull request #2183 from pagameba/classdesc

Use @classdesc notation
Merge pull request #2312 from tschaub/test-deps

Move test dependencies out of the repo.
Download and use new proj4js
Update externs and ol.HAVE_PROJ4JS for new proj4js API
Update API to work with custom transforms, including proj4js

All transparent proj4js handling is now in ol.proj.get, and a new
addCoordinateTransforms function makes it easy to configure custom
transform functions. ol.Proj4jsProjection is no longer needed.
Update tests
Update example to show manual proj4js configuration
Update example to show transparent proj4js integration
Use proj4.defs instead of proj4.Proj, to conform with the proj4js API
Doc changes suggested by @probins
Change dependencies to alphabetical order