Update SceneLoader.js

Added missing map type at ScelenLoader.js
declare size as a local variable
Merge remote-tracking branch 'nicoraf/master' into dev
WebGLRenderer: Refactored plugins.
Updated docs.
Updated builds.
Simplified ShadowMapPlugin.
Updated builds.
Merge remote-tracking branch 'mathisonian/patch-1' into dev
Line: renamed type property to mode.
ObjectLoader: Line support.
Updated builds.
ColladaLoader: rudimentary LineStrips support.
ColladaLoader: Removed default FlatShading.
Editor: Disabling Play/Script by now.
Editor: Cleaned up Publish commented code.
Tweaked EdgesHelper code. See #5490.
r69