Answer common questions about installation and use in readme

[fotoflo]

Hi there, I have a bunch of questions:

where does this GA get the site's GA tracking ID?

• assuming we should put the tag on index.html

how to properly send a pageview?

• like this? ga('send', 'pageview', {title: 'Sign up for TexTurner!', page: "/#/core/signup"});

how to properly send an event?

• like this? ga('send', { 'hitType': 'event', // Required. 'eventCategory': 'button', // Required. 'eventAction': 'click', // Required. 'eventLabel': 'nav buttons', 'eventValue': 4 });

[fotoflo]

Also, does it support ecommerce sending? A quick look at the code seems to suggest it only works if the arguments are an array, so the below wont work, cause it is never sent.

    ga('ecommerce:addTransaction', {
      'id': Date.now(),                     // Transaction ID. Required.
      'revenue': $scope.addAmount,               // Grand Total.
    });
    ga('ecommerce:send');

[fotoflo]

I've decided the best way for me to implement pageview tracking is to stick them in a resolve inside my router (that way all the page view tracking is in one place, and can be edited easily.

[panrafal]

It works exactly as per analytics documentation. You set the id in index.html and use the ga function just as you would use window.ga (all passed arguments are passed intact).