Update Loader.js

Changes 1 KB = 1000 B to 1024 KB = 1024 B
Adding boolean attribute "transparent" for files with transparency. 

http://stackoverflow.com/questions/18444939/define-transparent-material-in-json-model-format-3-1
updated transform controls
Merge branch 'dev' of https://github.com/arodic/three.js into dev
Merge branch 'dev' of https://github.com/mrdoob/three.js into dev
Add inheritance information to AreaLight
Add Vector methods clampScalar, floor, ceil, round, roundToZero
Update SceneUtils.html
Delete ShaderSprite.html
Update ShaderFlares.html
Update LensFlarePlugin.html
Update LensFlarePlugin.html
Update SpritePlugin.html
Update ShadowMapPlugin.html
Update ShadowMapPlugin.html
Update ImmediateRenderObject.html
Update LineDashedMaterial.html
Update Material.html
Update MeshDepthMaterial.html
Update MeshNormalMaterial.html