Add License, update readme and add author

@csavage-mdsol added some commits for license, readme and second author. 

Specs pass locally.

$ be rspec
...
Finished in 0.01707 seconds (files took 0.2342 seconds to load)
3 examples, 0 failures
Coverage report generated for RSpec to /Users/pmavinkurve/workspace/ignore_get_content_type/coverage. 0.0 / 0.0 LOC (100.0%) covered.

Please review/merge when satisfied.
Thanks!