update to react 15
update to react 15

PR: #700
PR-URL: https://github.com/apache/couchdb-fauxton/pull/700
Reviewed-By: garren smith <88e441bbc74790240af5b9cf1e4f4935d5a89fe0@gmail.com>

apache/couchdb-fauxton,popojargo/couchdb-fauxton,robertkowalski/couchdb-fauxton,cloudant/couchdb-fauxton,apache/couchdb-fauxton,garrensmith/couchdb-fauxton,robertkowalski/couchdb-fauxton,robertkowalski/couchdb-fauxton,cloudant/couchdb-fauxton,garrensmith/couchdb-fauxton,apache/couchdb-fauxton,garrensmith/couchdb-fauxton,cloudant/couchdb-fauxton,apache/couchdb-fauxton,popojargo/couchdb-fauxton,garrensmith/couchdb-fauxton,popojargo/couchdb-fauxton,popojargo/couchdb-fauxton,michellephung/couchdb-fauxton,benkeen/couchdb-fauxton,michellephung/couchdb-fauxton,benkeen/couchdb-fauxton,benkeen/couchdb-fauxton,michellephung/couchdb-fauxton,michellephung/couchdb-fauxton,cloudant/couchdb-fauxton,michellephung/couchdb-fauxton,robertkowalski/couchdb-fauxton