Merge pull request khamusa#40 from itay-grudev/master

Added RSpec as a runtime and development dependency for the gem

Version 1.3.0

Merge pull request khamusa#31 from khamusa/bugfix/bring-snake-case-na…

…mes-back

Bugfix/bring snake case names back

Version 1.2

Remove committed .gem file

Fixing travis build

Hooking up travis

Readme fix

Release v0.5

Improve error messages for have_a_field and fix type checking bug