add AUTHORS.md

AUTHORS.md

@@ -0,0 +1,12 @@
+# Authors
+
+#### Ordered by first contribution.
+
+- Feross Aboukhadijeh <feross@feross.org>
+- DC <dcposch@dcpos.ch>
+- Nate Goldman <nate@ngoldman.me>
+- Chris Morris <chris@chrismorris.org>
+- Giuseppe Crinò <giuscri@gmail.com>
+
+#### Generated by tools/authors.sh.
+

tools/authors.sh

@@ -0,0 +1,19 @@
+#!/bin/sh
+# Update AUTHORS.md based on git history.
+
+git log --reverse --format='%aN <%aE>' | perl -we '
+BEGIN {
+  %seen = (), @authors = ();
+}
+while (<>) {
+  next if $seen{$_};
+  next if /<support\@greenkeeper.io>/;
+  $seen{$_} = push @authors, "- ", $_;
+}
+END {
+  print "# Authors\n\n";
+  print "#### Ordered by first contribution.\n\n";
+  print @authors, "\n";
+  print "#### Generated by tools/authors.sh.\n\n";
+}
+' > AUTHORS.md