text: Blockly.Blocks['import'] = {
    init: function() {
      this.appendDummyInput()
          .appendField("import")
          .appendField(new Blockly.FieldTextInput("URL"), "url_name");
      this.setInputsInline(true);
      this.setColour(230);
   this.setTooltip("");
   this.setHelpUrl("");
    }
  };