Added 4k videos + error handling for invalid video source#145

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jonathonwpowell wants to merge 3 commits intocDima:masterfrom

jonathonwpowell:master

Commits on Sep 19, 2017

Added handling for un-parsable video source JSON
jonathonwpowell
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Added button to use 4k videos & added error handling for invalid JSON from video source URL
jonathonwpowell
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Commits on Oct 22, 2017

Merge remote-tracking branch 'upstream/master'
jonathonwpowell
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