code: function PullSummary () {
     this.files = [];
     this.insertions = {};
     this.deletions = {};
  
     this.summary = {
        changes: 0,
        insertions: 0,
        deletions: 0
     };
  
     this.created = [];
     this.deleted = [];
  }
docs: The PullSummary is returned as a response to getting `git().pull()`
  
  @constructor