Multiple partial paths

Allows multiple partial paths to be configured in the config settings

    plugins:
        partials:
            partialsPath: ['partials', 'some-other-folder', 'etc..']


Related with #10

**Wndows OS and "git text=auto"**
The only issue is that I use git on windows and have git text=auto.
This means that git will replace all LF to CRLF before I've even edited anything

So when I run the tests they output files with LF and therefore the tests fail on my OS
when I replace the CRLFs to LF in the out-expected files the tests pass!!. **But** git wont let me check those replacements in!!! and instead has checked in the CRLF's...which is a pain in the ass!!

I think there are two possible solutions here..

1) add a .gitattributes file with text=LF
or
2) change the tests to detect the text= setting and generate the files accordingly (this might get a bit ugly?)

Finding a solution here could a;so be useful across many docpad plugins