Update README.markdown
Update World.js
updating example docs to reflect latest three.js version
Merge pull request #98 from danielribeiro/updating-example-docs-to-reflect-latest-three.js-version

updating example docs to reflect latest three.js version
removed unused class MatN
sort require()s in browserify entry file
moved all shapes to own directory
merged with master branch
removed old build scripts
moved demo js and css to own folders
updated docs