Removes any hardcoded rspec configurations and ignores project's .rspec

I think it would be better to provide a .example file than to hardcode
rspec specific settings.  Doing so at the project level overrides the
developer's home level (~/.rspec) settings.
Merge pull request #4 from jgrevich/no_hardcoded_rspec_config

Removes any hardcoded rspec configurations and ignores project's .rspec