update normalize to v3.0.0
upped version & changelog
Merge branch 'release/v5.0.3' into develop
setup of docs
documented helpers
modified helper docs
naming conventions
better html documents
design principles
components
added base api
added basic code style
remove practical examples
apply heading
added note about carriage returns
rearranged css block
Merge branch 'feature/docs' of https://github.com/Blocss/blocss into feature/docs