Add multiplication and equality methods to Matrix3

Modeled on same from Matrix4

This is due to the removal of the Matrix4 equivalent in d8f7ccf2

Update DRACOLoader and DracoModule binary.

Adds isVersionSupported() method.

grammar/style copy-edit, a few minor clarifications

Added .jshintrc file to .gitignore

Docs: fixed links (Matrix4) and a few additions

Broken link to code style guide fixed

Geometries: Removed unused variables

Curve: Clean up

Extrude Splines Example: Dispose of geometries properly

clarified type of first param to constructor

OBJExporter: log material names

Curve: Fixed docs