Performance Improvements + Docker and Marathon!

[0.6.0] - 2016-05-23

Changed

• compression turned off by default. re-enable it with -compress
• better error reporting by adding a few strategic newlines
• compression, etc settings were not set when client reuse was disabled
• tie maxConns to concurrency to avoid FD exhaustion

Added

• TLS automatically used if https urls are passed into `-url
• Release script now builds darwin binaries
• Dockerfile
• Marathon config file