Update parser to version 2.2.0.pre.6
Update puma to version 2.9.2
Update sass-rails to version 4.0.4
Update twitter to version 5.12.0
Update ruby-progressbar to version 1.6.1
Update sprockets to version 2.11.3
Update rubocop to version 0.27.0
Update rails to version 4.1.7