implicitly add 'addressable' gem to Gemfile for parsing IRC url.
implicitly add 'addressable' gem to Gemfile for parsing IRC url.

the gem has been included as gh dependencies.

travis-ci/travis-core,final-ci/travis-core,final-ci/travis-core,jantman/travis-core,GistIcon/travis-core,Tiger66639/travis-core,kidaa/travis-core,kidaa/travis-core,developerfm/travis-core,Tiger66639/travis-core,travis-repos/travis-core,jantman/travis-core,travis-repos/travis-core,travis-ci/travis-core,Tiger66639/travis-core,travis-ci/travis-core,developerfm/travis-core,kidaa/travis-core,developerfm/travis-core,final-ci/travis-core,GistIcon/travis-core,GistIcon/travis-core