README.md Updates for NPM

Just some README updates for Npmjs.com display.

Auto Inference on set calls

If the set method is called with a callback, the inference is launched automatically with the given callback.

First Stable Release

This is officially the first stable release of the engine!

There is two new features available:

1. The new startTracing and stopTracing methods help to follow inference steps by steps
2. The dist source folder contains a fully browser usable infernal-engine library (special thanks to @m0xx)

The documentation have been updated using jsdoc.

Strengtened Code Base

This release do not include any new feature. This is the list of improvements we did to the source code:

• Renamed variables and functions to have a cleaner code base.
• Moved a set of utility functions to the "utils.js" module.
• Created an EngineProxy class to handle scope properly during inference.

The code base have been cleaned a lot. This version is intended to be stable enough to sustain the next big set of improvements.

First fully functionnal version

Fully fledged version covering all aspects of an inference engine. Still need some testing though...