Write a new readme
Configure for Travis
Badge up!

[ci skip]
Install Code Climate test reporting
Update the bundle
Add a test to cover message list authentication
Test the User.authenticate method
Address RSpec 3 deprecation warnings
Upgrade to RSpec 3
Address further RSpec 3 deprecation warnings
Test the authentication process
Use RSpec's documentation format

This allows us to see the performance test timing on Travis.
Eager-load the sender for each message in the list view

This consolidates the per-message queries into one query to load each
message's sender into memory.