hoodie.account #signUp "before each" hook FAILED

```
PhantomJS 1.9.7 (Mac OS X) hoodie.account #signUp(username, password) when username set and user is logged out when signUp successful "before each" hook FAILED
	TypeError: 'undefined' is not an object (evaluating 'this.requestDefers[0].resolve')
	    at /Users/boennemann/Projects/hoodiehq/hoodie.js/test/specs/hoodie/account.spec.js:737
	    at callFn (/Users/boennemann/Projects/hoodiehq/hoodie.js/node_modules/mocha/mocha.js:4338)
	    at /Users/boennemann/Projects/hoodiehq/hoodie.js/node_modules/mocha/mocha.js:4331
	    at next (/Users/boennemann/Projects/hoodiehq/hoodie.js/node_modules/mocha/mocha.js:4626)
	    at /Users/boennemann/Projects/hoodiehq/hoodie.js/node_modules/mocha/mocha.js:4630
	    at timeslice (/Users/boennemann/Projects/hoodiehq/hoodie.js/node_modules/mocha/mocha.js:5763)
PhantomJS 1.9.7 (Mac OS X): Executed 585 of 588 (1 FAILED) (7.039 secs / 0.655 secs)
```

[Failing beforeEach hook](https://github.com/hoodiehq/hoodie.js/blob/master/test/specs/hoodie/account.spec.js#L708-L724)