Added note to 'contributing.rst file', telling users to append GH Issue…#28907

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jreback merged 2 commits intopandas-dev:masterfrom

S3rbane:GHnumber

Oct 12, 2019

Commits on Oct 10, 2019

Added note to contributing.rst file, telling users to append GH Issue Number to new tests
S3rbane
committed

Commits on Oct 11, 2019

added an example underneath the note
S3rbane
committed