Add goog analytics fixes #78
I think these are the two necessary adds that will initiate google analytics. It should track to your account so to finish this, you need to set up a property using these instructions: https://support.google.com/analytics/answer/1008015?hl=en
Then line 6 of the gtag.js file needs should swap out my temporary Google Analytics ID (To find on your google analytics account: Under PROPERTY, click Tracking Info > Tracking Code) with yours.
Once done and deployed on master --> then heroku, I think this will work?