Issue with soft bodies

[swift502]

Hi,
I came across a problem while using Ammo.
I'd like to expose another attribute of btSoftBody Nodes.
Do I just add it in ammo.idl and file a pull request?
Then I should build Ammo so I can actually use it in js?
Or should I build it first and then file a pull request?

Edit: Just found #178. Sorry for bothering! :)