OSX dev error "process is not defined"

Difficulty: easy

`renderer/index.html` line 11:

```js
    if (process.env.NODE_ENV === 'development') {
```

That check fails in a dev deployment because `process` is not defined.  Fix: test if process is defined:

```js
    if (typeof process !== 'undefined' && process.env && process.env.NODE_ENV === 'development') {
```