Load RSpec rake task only when appropriate
Load RSpec rake task only when appropriate

For instance, it is not outside of the :test group.
In this case, we define the dfeault task without :rspec

andyli/travis-build,JuliaCI/travis-build,craigcitro/travis-build,kevmoo/travis-build,kevmoo/travis-build,andyli/travis-build,craigcitro/travis-build,JuliaCI/travis-build