hangups: add page

pages/common/hangups.md

@@ -0,0 +1,15 @@
+# hangups 
+
+> Third party client for Google Hangouts.
+
+- Start hangups:
+
+`hangups
+
+- View troubeshooting information:
+
+`hangups -h
+
+- Set a refresh token for hangups:
+
+`hangups --token-path {{/path/to/token}}