addded a travis CI integration
Updated travis.yml
Removed old icons to place new GTK icons
Placed GTK icons
Placed the new popup.
Modified DialogFX's classes to adapt the new GUI and added a WARNING type to the popup.
Added a controller for the DialogFX .fxml file, though it's not working one hundred per cent.
deleted to place the new renamed icons
icons renamed
Modified the strings in the case statement to correct icons^Cames
I Forgot to change the default case, but it is already fixed. :)
Now everything is working as expected, have fun. :)
README updated.

Added a paragraph of the contributors.
README updated.

Fixed grammar spelling.
I Got rid of somethings.
Merge branch 'master' of github.com:rafaelcn/DialogFX
Added a version to the dialog, simplified some functions and added some TODO's to further work.
Simplified DialogFX, I took out the redundancy of the class.
If you have an instance of Stage in your class, you do not need to extend Stage, it's useless.
Merge pull request #4 from rafaelcn/master

New DialogFX version, updates courtesy of Rafael Nunes!