Upgraded to Gatsby v2

This starter has been forked and upgraded to Gatsby v2.

This is a Gatsby v2 fork of gatsby-starter-casper by @haysclark. The upgrade to v2 was mostly done by @hnspn with a little help from the folks at GatsbyCentral.

Here's a little recommended reading for Gatsby v2.

If you do decide to upgrade, these articles will help you do that.

Finally, here's a cheat sheet we prepared to help during the upgrade: