DOC: Link to dev version of contributing guide from README.md#24172

Merged

jreback merged 3 commits intopandas-dev:masterfrom

jamesmyatt:link-to-dev-docs

Dec 17, 2018

Commits on Dec 9, 2018

DOC: Link to dev version of contributing guide from README.md
jamesmyatt
committed

Commits on Dec 10, 2018

DOC: Minor improvements to contributing overview and link from README.md
jamesmyatt
committed
DOC: link to development version of contributing guide rather than stable branch
jamesmyatt
committed