Fix test runs in Rake
Rename message.send to message.deliver

send() is basically a reserved method name, while you *can* override its
functionality it's not necessary for this use case and will only serve
to cause problems in the future.
Make multiple connection attempts. Fail after 5.

I'd like to make connection attempts, and the timing between each,
configurable via yml settings. Eventually.
Remove Gemfile.lock
Bump version.
Merge branch 'release/0.3.2'

* release/0.3.2:
  Bump version.
  Remove Gemfile.lock
  Make multiple connection attempts. Fail after 5.
  Rename message.send to message.deliver
  Fix test runs in Rake