parse_perforce_path() takes two arguments.
Correctly resolve root path if `code_swarm` is a symlink

This will make it easier to install code_swarm, or link to the
`code_swarm` binary from a directory on the $PATH.
Remove whitespace [Gun.io WhitespaceBot]
Merge pull request #8 from GunioRobot/clean

Accept removal of trailing whitespace from robot
Merge pull request #6 from gmcnew/master

parse_perforce_path() takes two arguments
Merge pull request #7 from mdippery/pu/resolve-root-path

Calculate root path when `code_swarm` is a symbolic link