update spec

Merge branch 'develop' of https://github.com/jessesquires/JSQMessages…

…ViewController into develop

suppress warning for now. fix in next release, see jessesquires#920

clean up from PR jessesquires#841

bump version numbers

bump version numbers

unit tests and refinements

v6.1.0

fix pod spec

Release 6.0 beta 6. See jessesquires#476 for details.