beginning of 2.0
load component for each env
make it wokring
minor bug fix
refactored env implementation
minor fix on loading envs
examples for 2.0
bug fixes
Merge branch 'master' of github.com:lulurun/fractaljs into xiaolu-master
more friendly api
clean up
fixed examples/index.html
Merge pull request #6 from lulurun/2.0

start of 2.0