Updates to Day 2 Summary article
Updates to Day 2 Summary article

* Add headers to major sections
* Clean up some spelling and grammatical issues.

jerriep/blog,auth0/blog,auth0/blog,jerriep/blog,auth0/blog,kmaida/blog,kmaida/blog,mike-casas/blog,mike-casas/blog,auth0/blog,guillermoga88/blog,jerriep/blog,guillermoga88/blog,mike-casas/blog,kmaida/blog,kmaida/blog,guillermoga88/blog