Upgrade ruby from ree 1.8.7 to mri 1.9.3
Uninstall SystemTimer as it breaks with ruby 1.9

It's only intended to work around an issue with ruby 1.8.
See: http://ph7spot.com/musings/system-timer
Run capybara specs with poltergeist/phantomjs

The selenium driver was having issues. Using a headless
browser for testing is way nicer anyway.
Replace .rvmrc with .ruby-version and .ruby-gemset
bundle update

A lot of gems dropped support for ruby 1.8 in later
versions, so now we can finally upgrade.
Merge pull request #4 from g5search/upgrade_to_ruby_19

Upgrade to Ruby 1.9