1.2.4 update

Merge pull request saharan#49 from pschroen/develop

Add package.json type as module

Merge pull request saharan#48 from saharan/develop

for 1.2.2

1.2.0 update

* fixed `Mat4.ortho`
* modified macros
* moved demo sources from /src to /demo/src/
* fixed collision filtering bug
* added `RigidBody.isSleeping`

interface bug fixed

Merge branch 'develop' of https://github.com/saharan/OimoPhysics into…

… develop

Create LICENSE

added new demo and some APIs