CONTRIBUTING.md: Prohibit "+1" comments in favor of reactions (!19470) · Merge requests · Bootstrap / bootstrap · GitLab

Merged Administrator requested to merge plus-1-stfu into v4-dev Mar 11, 2016

Created by: cvrebert

Refs https://github.com/blog/2119-add-reactions-to-pull-requests-issues-and-comments Refs https://github.com/dear-github/dear-github/issues/141#issuecomment-195106918

CC: @twbs/team