Fix to Tw2FloatParameter and Basic Documentation
Fix to Tw2FloatParameter and Basic Documentation

- Basic Documentation
- Added `this.offset` @property which was missing from the Tw2FloatParameter Constructor

The `size` @param from Tw2FloatParameter's  `Apply` prototype is currently redundant. 
(It is also passed to the `Apply` prototype from within the `Bind` prototype)

The `Apply` prototype could be changed to:
```
Tw2FloatParameter.prototype.Apply = function(constantBuffer, offset, size)
{
    constantBuffer.set(this.value, offset, size)
}
```
cppctamber/ccpwgl,ccpgames/ccpwgl