allow classes to be set in bootstrap_flash helper
Merge branch 'master' of github.com:seyhunak/twitter-bootstrap-rails into issue_677

* 'master' of github.com:seyhunak/twitter-bootstrap-rails:
  travis wants 1.9.3, 1.9.2 is complaining it can't install rubyracer.
  fix failed test
  green tests
  ran guard init
  added guard, pry, and rspec configuration for each
  fix command to travis
  command is spec not rspec
  fix travis command to run test
  update rake to run rspec
  drop travis ruby support for 1.8 and add 2.1
Merge pull request #754 from toadkicker/issue_677

allow classes to be set in bootstrap_flash helper