Fix Markdown syntax in README

Bugfix: force border box-sizing on column elements
Add sache configuration file
Update Sache keywords
Add editorconfig file to unify the coding style across IDEs
Add a bower entry
Change the project baseline
Remove offset-right() support, because of a conflict with default negative margin, close #1
Add a default column flow configuration
Add an option to display an external pad to the grids
Bugfix: force border box-sizing on column elements
Start a changelog for the v1.0.0