[release][v1.6.0] Bump version numbers.
[release][v1.6.0] Update website.
Merge pull request #107 from rackerlabs/release-v1.6.0

Release v1.6.0
[release][v1.6.1] Update logo.
[release][v1.6.1] Update CHANGELOG.
[release][v1.6.1] Bump version number.