Dutch translation added

Hi bakkelhan,

Thanks for your feedback! I glad you like the plugin!
Please create a new issue and attach a file(s) here https://bitbucket.org/olezhek/wp-posts-filter/issues/new to send the translation. I’ll include it in the next version.

Thanks a lot for your efforts!
Oleg

Ok Oleg, done!

Added in 0.3.2, thank you again!