a better way to get obj's prop without eggache(蛋疼).
##effect
if you have to do:
var movieName = res && res.body && res.body.data && res.body.data.movieName;
you can:
var ak = require('and-killer');
var movieName = ak(res)('body.data.movieName');
when a prop is undefined, you will get:
false