Add intel map link generator

Generate intel map links from rough addresses. Zoom is hardcoded. This uses google API, so it shouldn't break any TOS. People seem to like it. I figure others will too. Apologies if my Coffeescript/mocha tests aren't up to par. This is stack is completely new to me.

(sambot name for our hubot)
```
drstevens [11:10 AM] 
sambot intelmap soho ny

sambot [11:10 AM] 
drstevens: https://www.ingress.com/intel?ll=40.723301,-74.0029883&z=16
```
If it's not too much trouble, could you add something to the readme.md explaining how/where to get a key?