Merge pull request #26 from wiggzz/master

Pulling in some small changes... removing some compiler warnings, added a speed test.
Update README.md

Changed verificable to verifiable and publically to publicly
Merge pull request #27 from nameone/master

Update README.md
os x endian swap fix.
Merge branch 'master' of github.com:storj/heartbeat
renamed SwPriv to Swizzle