Contains the initial scripts and configuration for travis-ci and coveralls integration.

Fixes #96

Remove logrus and glog from most modules, keeping it only in bulk loaders. Instead switch to stubby like rpc tracing using net/tracer.

encoding. This helps us use the amazing context feature of grpc for RPC
tracing and client to server enforced deadlines.

Also upgrade the protobuf package so we can compile proto3.

Convert bytes to string before JSON encoding during ToJson. Switch to 2 servers. Add profiling info for loader.

Have a flag to forbit mutations on a server. Very useful for the live demo, or other read-only situations.