Integrate Github Java Code to Web Site

Would like to fork proofofexistence.com and run on my own web site: blockstamp.me. The code/site, which registers a document hash on the bitcoin blockchain forever, is open source and can be forked on Github (as seen on proofofexistence's home page). Would first like a simple integration with my blank site, and then do enhancements later. The instructions for how to install are here: http://docs.proofofexistence.com/#/get-started