Added travis build status image
Added `bundle exec` to build script
Fix for Ruby 1.9.x build failures on travis-ci

See: http://stackoverflow.com/questions/2900370/why-does-ruby-1-9-2-remove-from-load-path-and-whats-the-alternative
More fixes for travis build

This is related to writing the gem such that it works with multiple ruby
implementations including MRI, JRuby, and Rubinius, as well as both Ruby1.8 and
Ruby1.9 versions in those implementations.
Added Ruby 2.0.0 to the CI build
Updated README for 0.3.0 release

Also set the default `count` parameter for usage stats to 1.
More updates to the README
More tweaks to the README
Fixed rake task to use defaults only.
Corrected README about how to send email in code
Versioned README
More tweaks and cleanup to README
0.3.0 work

- lib/how_slow/collector.rb
  - Cleanup of indentation/style
- lib/how_slow/setup.rb
  - Collapsed nested hash of various options down to a single-level
  - Removed the ::configure method as all Railties come with this by default
- lib/how_slow/mailer.rb
  - Changed the #metrics_email method to use the new collapsed setup options
0.3.0 work

- lib/how_slow/setup.rb
  - corrected a typo in the spelling of "events"
- test/lib/how_slow/mailer_test.rb
  - renamed all the options under test to match the new collapsed convention
Fixed dependencies to exclude Rails 4 support (for now)