Will check if child is running

  - Add better error handling
  - Add example.cgi which i use to check how the plugin behave under CGI
Merge remote-tracking branch 'leejo/master'

Conflicts:
	lib/Mojolicious/Plugin/CGI.pm
Released version 0.05

       * Fix pipe leak
       * Support 302 redirects
       * Add better error handling
       * Will check if child is running
Released version 0.0501

       * Fix waitpid before kill, because of defunc children