Added info about tox, so people can use it prior to a PR
Add link to try-hy
Adding support for coverage tests at coveralls

This commit adds support for coverage tests at coveralls.io,
using coverage plugin from nosetests
Fix REPL completions on OS X
Merge branch 'master' into pr/348
Merge branch 'master' into pr/347
add coveralls token
Erm, revert that. Apparently that wasn't proper.
Merge branch 'master' into pr/346
Merge pull request #349 from hcarvalhoalves/fix-osx-complete

Fix REPL completions on OS X
Add @hcarvalhoalves to AUTHORS. We fucked up that PR :)