Never done this with a DropBox ...
Potentially the following description may help you:
http://metadata.mx/personal-wiki/
following is a snipped from the page ...
What do you need?
This solution will require us to install some apps in our Mac. At the end you’ll get a personal wiki that will behave as a native application on your Mac and will be simple to use, but before getting to that point you need the following:
•DokuWiki (free web application)
•MAMP (free native application)
•Dropbox (free native application)
•AppleScript Editor (operating system application)
•Keychain Access (operating system application)
•Fluid (free native application)