Merge pull request #4 from disjukr/master

Add support for wacom tablet pen pressure
Trying to fix pinch and crease... still far from perfect.
Trying to fix pinch and crease... still far from perfect.
Merge branch 'master' of https://github.com/stephomi/sculptgl
Update build index.html.
Pen tablet : choice between radius or intensity pressure
Fix ui.
Keep the scale when exporting the mesh.

SculptGL normalize the mesh at loading. Now we keep the scale difference
and apply it back when we export the mesh.
Add upload to Verold button.
Add success message on verold upload + fix crease adaptive.
Add success message on verold upload + fix crease adaptive.
Add sketchfab upload.
Merge branch 'master' of https://github.com/stephomi/sculptgl

Conflicts:
	build/sculptgl/sculptgl.min.js
Let's close these 2 folds :p.
Let's get rid of this hack.
Refactor project/unproject.
Remove useless test.
Update build.
Add binary and ascii import STL.
add drag.