Add missing library

Author: muffinista

app/ui/js/options-form.jsx

@@ -3,6 +3,8 @@ import React from 'react';
 
 import SliderWithValue from './slider-with-value';
 
+const _ = require('lodash');
+
 export default class OptionsForm extends React.Component {
   constructor(props) {
     super(props);