Adding Persona Authentication # DO NOT MERGE ##1

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edchiou wants to merge 5 commits intowaterbearlang:masterfrom edchiou:persona_auth

+378-98

Commits on Feb 21, 2014

does this work
edchiou
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Commits on Mar 7, 2014

added express
edchiou
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Commits on Apr 1, 2014

updating
edchiou
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Commits on Apr 4, 2014

updated README
edchiou
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Commits on May 2, 2014

made some fixes
edchiou
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