All information within this chm folder is governed by the MIT license.

Step 1:
Install HTML Help Workshop
    http://www.microsoft.com/downloads/en/details.aspx?displaylang=en&FamilyID=00535334-c8a6-452f-9aa0-d597d16580cc
Install Python 2.x
    http://www.python.org/

Step 2:
Run generate_doc.py with no arguments

Step 3:
Open keyfinder.hhp with HTML Help Workshop
Click on File > Compile...
In the dialog click Compile again

That's all!
You should have keyfinder.chm in the folder.