rcrowley/go-tigertonic — pull request #70 by randallsquared (2014-06-19 14:55:25+00:00)
Title: Support Access-Control-Expose-Headers in CORS

In this PR:

* add a new method for CORSBuilder, AddExposedHeaders, like AddAllowedHeaders.
* unconditionally add this header to responses, since it doesn't depend on any request headers.
* miscellaneous typo fixes and clarity rewording in comments
* completely gratuitous const grouping (which I can revert from this PR if you'd prefer; not sure what your coding standards are on that)