Update README.md

started fixing a few bugs; samples still not working though

- fixed Instance initialization for pre and post routers

- v0.7.2

- finally fixed instance cache

- close to fixing proper instance caching

- more work on Instance caching

- half way through fixing Instance cache bug

- v 0.6.8

- fixed public folder config settings

Update README.md

- fixed a minor bug that lead to an unhandled exception when `handleClientRPCRequest` override does not return a Promise

- removed a lonely line of console.log spam

- made maxCommandsPerRequest configurable

- added blacklist configuration options to ComponentTool's traceCfg