Parsed body isn't available in promise result

[ikokostya]

Parsed body isn't available in promise result, because parsed body is passed to end(fn) callback as separated parameter

hippie/lib/hippie/client.js

Lines 385 to 388 in 34e0789

	return new Promise(function(resolve, reject) {
	self.prepare(function(err, res, body) {
	if (err) return reject(err);
	resolve(res);

E.g. in the following example res.body is always string:

hippie(app)
    .json()
    .get('/')
    .end()
    .then((res) => {
         assert(typeof res.body !== 'string'); 
    });