rename directories for case sensitive environments
Merge pull request #7 from jredville/travis

rename directories for case sensitive environments
Fixing syntax error on immediate_scheduler
add minitest for rubinius
Merge pull request #8 from jredville/rubinius-travis

add minitest for rubinius
Adding Observer tests
Merge branch 'master' of https://github.com/Reactive-Extensions/Rx.rb
Changing Observer.to_observer to notifier