code: function (pkg, options) {
          var name;
          var opts;
          if (typeof pkg === 'object') {
            opts = pkg;
          }
          else {
            name = pkg;
            opts = options || {};
          }
          var endpoint = name && opts.version ? name + '#' + opts.version : name;
          if (endpoint) {
            ProcessService.execute(['bower install', endpoint, opts.options].join(' '), 'install-' + name);
          }
          else {
            ProcessService.execute(['bower install', opts.options].join(' '), 'install');
          }
        }
docs: Install package