- Added `useRelativeBase` to allow for relative directory paths from the associated files path
		- Closes [pull request #5](https://github.com/docpad/docpad-plugin-associatedfiles/pull/5) and [pull request #4](https://github.com/docpad/docpad-plugin-associatedfiles/pull/4) thanks to [rantecki](https://github.com/rantecki) and [takitapart](https://github.com/takitapart)
	- Fix documentation to reference associatedFilePath correctly
		- Closes [issue #3](https://github.com/docpad/docpad-plugin-associatedfiles/issues/3), thanks to [janieowen](https://github.com/jamieowen)