Add UTF-8 charset declaration
Bump development version.
Multiple output types

Generates px version from base
Use base version to generate rem and em version

Only px version needs to be maintained.
Merge branch 'multiple' of github.com:hphoeksma/css-toggle-switch into multiple

* 'multiple' of github.com:hphoeksma/css-toggle-switch:
  Multiple output types
Tweaks and fixes after merging the multiple unit output types pull request.
Upgrade bower components and tweak docs styles to match Foundation changes.
Fix missing li tag end.
Update readme.