Changes

|https://github.com/aljohnson1/popcorn-js/commit/e1f9662b4c4, https://github.com/aljohnson1/popcorn-js/commit/7f8dbb4b579e3|1. Adding Pause to a video element(t308) 2. Correcting lint errors for all Popcorn unit tests(t607).|https://webmademovies.lighthouseapp.com/projects/63272/tickets/308-standard-pause-attribute, https://webmademovies.lighthouseapp.com/projects/63272-popcornjs/tickets/607-unit-tests-fail-lint#ticket-607-7