code: function(callback) {
          var data = JSON.parse(JSON.stringify(self.projectData, null, 4));
          data.bundles[self.bundle] = {
              "comment" : "Your comment goes here.",
              "tag" : "001",
              "src" : "src/" + bundle,
              "release" : {
                  "version" : "0.0.1",
                  "link" : "bundles/"+ bundle
              }
          };
          try {
              fs.writeFileSync(self.project, JSON.stringify(data, null, 4));
              callback(false, data)
          } catch (err) {
              callback(err, undefined)
          }
      }
docs: Save project.json
  
  @param {string} projectPath
  @param {object} content - Project file content to save