links, resources related to versioning and provenance

[mdsumner]

some links and notes to ensure we have a good overview of available resources for this

https://github.com/NCEAS/recordr

https://github.com/o2r-project/containerit - discussed at UserR2017 and will have video

https://github.com/nuest/docker-reproducible-research - a course on docker-reproducibility

[raymondben]

Vignette in progress in the 'provenance' branch, mostly discussing the issues but see also the bb_fingerprint() function.

[mdsumner]

https://github.com/JGCRI/RCMIP5/issues/142