Revert "Regen and encrypt Flowdock key"

Travis-Flowdock integration is currently broken. This worked before encrypting
the key, so revert to the insecure method until we can find a better method.

This reverts commit a57607430a3dd7daa39a18f7b4be253e08ce9691.
Merge pull request #109 from tlvince/bug/travis-flowdock

Revert "Regen and encrypt Flowdock key"