added signature (rms-open-letter#6)

thisisparker · web-flow · commit 2048de693108 · 2021-03-23T11:28:21.000-07:00
diff --git a/index.md b/index.md
@@ -40,3 +40,4 @@ Signed,
 - Geoffrey Thomas
 - Matt Lee (Libre.fm, former member of the GNU Project)
 - Steve McIntyre (Former Debian Project Leader)
+- Parker Higgins
