From https://github.com/deployphp/deployer/issues/742#issuecomment-237638384

1. rename /usr/local/bin/dep to /usr/local/bin/depployer.phar

   mv /usr/local/bin/dep /usr/local/bin/deployer.phar

2. Make a symbolic link for convenience back to dep

   ln -s /usr/local/bin/deployer.phar /usr/local/bin/dep

3. Add /usr/local/bin to include path under PHPStorm -> Preferences -> Language & Frameworks -> PHP