add doc and demo to repo about gemma

[jrandall]

This has been partially addressed (demo files and pdf added) by commit d150a16. Would it be possible as Tim suggests to also commit the LaTeX source for the PDF so that people could potentially contribute pull requests for documentation fixes?

[xiangzhou]

There is a *.tex file inside doc folder by commit d150a16. By "LaTeX source" do you refer to some other files?

[jrandall]

Apologies, I should have been more clear. I see that the .tex file itself is there, but it refers to a few files that don't exist in source control so it isn't possible to generate the PDF you have from them.

I think the only missing files are the .bib files for the citations. You have three files listed:
\bibliography{/net/wallace/ga/xz7/Documents/Papers/BIB/lmm,/net/wallace/ga/xz7/Documents/Papers/BIB/bslmm,/net/wallace/ga/xz7/Documents/Papers/BIB/mvlmm}

I am guessing probably these are referring to some more generic .bib files that you use for a lot of work and not just GEMMA (this is how I typically work as well). Would it be possible to just copy the bib records that are referred to in the GEMMA source from those three .bib files (lmm.bib, bslmm.bib, and mvlmm.bib) into a single gemma.bib that you then add to source control (and obviously change the line in .tex to \bibliography{gemma}).

[xiangzhou]

A new bib file is added in doc and all files there are updated accordingly.