more generic integration of the label

Label is now positioned absolute. Should not interfere with the docFlow.
angularJs directives

deleted label and classes, textinput only for now.
it's a directive now.
Update README.md
Update floating-labels.js
Update README.md
Update floating-labels.css
Merge pull request #1 from codebakery-ch/angular

AngularJS Directive and new styles