code: function saveFileChanges(themeId, folderName, fileName, text) {
          io({
              url:getURL("save") + "/" + themeId + "/" + folderName + "/" + fileName,
              data:{
                  content:encodeURI(text)
              },
              callback:function (isSuccess, message, response) {
                  if (!isSuccess) {
                      showErrorMsg(message);
                  }
              }
          });
      }
docs: Handler for save file changes
  @param {String} themeId
  @param {String} folderName
  @param {String} fileName
  @param {String} text