added URL to Wordpress Plugin Directory
fixed missing closing bracket
added URL to Travis CI
added URL to GitHub
added URL to Gratipay
added URL to Hackage
added URL to Hex.pm
added URL to Pub
added URL to Puppetforge
added URL to Chef Cookbooks
added URL to VersionEye
added URL to npm
added URL to Bountysource
added URL to Gemnasium
modified identifier