Restrict term-ansicolor to a version that supports Ruby 1.9.3
Restrict term-ansicolor to a version that supports Ruby 1.9.3

Update the gemspec to fix the following `bundle install` error in the 1.9.3 Travis build:
> term-ansicolor-1.4.0 requires ruby version >= 2.0, which is incompatible with the current version, ruby 1.9.3p551

bonusly/hipchat-rb,hipchat/hipchat-rb,bonusly/hipchat-rb,hipchat/hipchat-rb