Added badges
Add composer_root_version
Merge branch 'master' into fix_php_warning

* master:
  Add composer_root_version
  Added badges
use master composer dependencies
Merge pull request #13 from Kunstmaan/fix_php_warning

Fix php warning
Merge branch 'master' into 2.3

* master:
  use master composer dependencies
  Add composer_root_version
  Added badges
fix dependencies