PDF-Toolkit AddON

Hi,
I am new to Alfresco and am trying to install "PDFF Toolkit" in Alfresco Community 5.0 .
I could not find clear instructions online on how to complete this.
I have looked at https://github.com/ntmcminn/alfresco-pdf-toolkit but could not follow.
can someone please provide the steps and where I can find the download/amp's?
regards