One of the central files to any Ruby or Rails project is the Gemfile. When
it is time to add or remove a Gem, that is the place to go. The
vim-bundler plugin allows you to
quickly navigate to the project's Gemfile by entering the following
command:
:Bopen
That command is primarily used for navigating to the source of a particular
Gem, but when used alone, it pops open the Gemfile.