Added relevant .jshintrc

Tried to match the style as closely as I could with the [JSHint Options](http://www.jshint.com/docs/options/). Used a [fun little script](https://gist.github.com/kentcdodds/11293570) to make this easier.

Author: Kent C. Dodds

.jshintrc

@@ -0,0 +1,15 @@
+{
+  "camelcase": true,
+  "curly": true,
+  "eqeqeq": true,
+  "freeze": true,
+  "indent": 2,
+  "newcap": true,
+  "quotmark": "single",
+  "maxdepth": 3,
+  "maxstatements": 15,
+  "maxlen": 80,
+  "eqnull": true,
+  "funcscope": true,
+  "node": true
+}