Merge pull request#2 from catmullet/speed_updatespeed update/refactor

Make sure we don't return an error when we can't find cached model.

Update README.md

Fix to get current directory for creating snappy file.Verified and fix test location data.

Fix to get current directory for snappy file.

move snappy data file to root for vendoring

Commit for first release, utilize snappy and gob to cache the model a……nd load it.

Commit for first release, utilize snappy and gob to cache the model a……nd load it.

Update README.md

fix some grammar.