Add a link to ACSS
Merge pull request #156 from morishitter/acss

Add a link to ACSS
Rename childs to nodes
Remove deprecated APIs
Update dependencies
Move from Should.js to Chai.js
Move new test to nodes property
Use common lint for lib and tests
Save Input to Node
Move source map code from CssSyntaxError to Input
Add Node#error()
Better work with code styles with indent support
Clean all styles on clone
Allow to create other node types by hash
Remove outdated code
Clean up Container#normalize()
Remove parent on removeSelf()
Remove parent on remove()
Check that we clean parent on clone()