Adam Monsen
5468f7999d
I started editing this just to fix the link to the "Pull Requests" doc (it moved from README.md to CONTRIBUTING.md), but then I saw a few other places in need of service. * use Markdown links for readability * add link to pull request size limit wiki page re: code dumps * remove link to PR 1284, it doesn't add anything here and takes the reader out of context * add link to mailing list * add link to testing docs