test for existence of nested object key and optionally return that key
##Installation npm install deephas
or just drop deepHas.js into your project.
##Usage
dh = require("deepHas");\n
var obj = {"some": {"nested": {"property":""your value here"}}};
Returns true or false if 'some.nested.property' exists or not.
Returns the value or undefined if it does not exist.
Adds a new property or object.