Merge pull request #95 from jhudsl/obi-preview-1 #31

Job	Run time
Load user automation choices	11s
Render course preview	3m 36s
Render TOC-less version for Leanpub or Coursera	2m 20s
Finish Coursera prep	1m 3s
Finish Leanpub prep	1m 23s
	8m 33s

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