Bumped verison number
Updated README
Merge branch 'release/v1.3.0'

* release/v1.3.0:
  Updated README
  Bumped verison number
  Added tests for BootstrapBadgeExtension and BootstrapLabelExtension
  Fixed twig/extensions to 1.0.*. Closes #24
  Added section on assets to README
  Let the choice label determine its own label
  Remove component.json
  Updated composer
  Removed resourses, added component.json
  Added missing definition checks
  Added possibility to add icon to appendInput and prependAppendInput widgets.
  Extends behaviour in how input fields are rendered. Adds support to include icon in output.
  removing responsive css code
Merge branch 'release/v1.3.0' into develop

* release/v1.3.0:
  Updated README
  Bumped verison number
Removed twig/extensions. Fixes installation via composer
Bump version
Merge branch 'hotfix/v1.3.1' into develop

* hotfix/v1.3.1:
  Bump version
  Removed twig/extensions. Fixes installation via composer