Logic change

Hi @urre,
Changes made in 1.0.1 version still display extra buttons on EVERY admin screen. The problem was incorrect logic of making sure that we are on right screen when loading style and script. My changes ( tested ) are:

1. new instance of the class on back-end only ( no need for is_admin() check within class )
2. load style and script on any post type new / edit screens only

Frank