This map was created and can be edited at http://simplemaps.com/custom/us/h0wwnBs6
To remove the "Simplemaps.com Trial" text, purchase a map license. Then, register your license at the link above (Options > Register Purchase). Or, simply replace the usmap.js file in this folder (trial version) with the usmap.js file that you are emailed (full version).
To learn how to install this map on your web page, see the Documentation.