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.
dh.get(obj, 'some.nested.property')Returns the value or undefined if it does not exist.
dh.set(obj, 'some.nested.newproperty', "your value here")Adds a new property or object.
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