renamed Mesh3D to Mesh
removing the Mesh3D.pde
Merge pull request #30 from whyi/mesh_3d_rename

renamed Mesh3D to Mesh
Renamed Camera3D to Camera
Merge pull request #31 from whyi/camera_3d_rename

Renamed Camera3D to Camera
Merge branch 'master' into splitEdges

Conflicts:
	web-export/spec/SketchFormerTests.coffee
	web-export/spec/SketchFormerTests.js