[O] new org-ref repo

[John Kitchin]

Hi all,

I have finally put my org-ref code into its own git repo:
https://github.com/jkitchin/org-ref

The repo includes some handy utility functions on a doi and bibtex
entries. I "improved" the cite link menu so it has a lot of new options
to open a cite link bibtex key in web of science, pubmed, google scholar
and cross-ref if the corresponding bibtex entry has a doi. It is pretty
nice (biased opinion of course). Hopefully I got all the dependencies in
this repo correct so it will just work for you. If not, post an issue on
Github, and I will work on fixing it! Thanks,

-- 
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John Kitchin
@johnkitchin
http://kitchingroup.cheme.cmu.edu