def parse_name(name)
      # Expect this will always match
      match = name.match(BRANCH_NAME_REGEXP)
      remote = match[:remote_name] ? Git::Remote.new(@base, match[:remote_name]) : nil
      branch_name = match[:branch_name]
      [ remote, branch_name ]
    end
Given a full branch name return an Array containing the remote and branch names.

Removes 'remotes' from the beggining of the name (if present).
Takes the second part (splittign by '/') as the remote name.
Takes the rest as the repo name (can also hold one or more '/').

Example:
# local branches
parse_name('master') #=> [nil, 'master']
parse_name('origin/master') #=> [nil, 'origin/master']
parse_name('origin/master/v2') #=> [nil, 'origin/master']

# remote branches
parse_name('remotes/origin/master') #=> ['origin', 'master']
parse_name('remotes/origin/master/v2') #=> ['origin', 'master/v2']
parse_name('refs/remotes/origin/master') #=> ['origin', 'master']
parse_name('refs/remotes/origin/master/v2') #=> ['origin', 'master/v2']

param [String] name branch full name.
return [<Git::Remote,NilClass,String>] an Array containing the remote and branch names.