Merge pull request #1292 from Risen-phoenix/master

hangups: add page

pages/common/hangups.md

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+# hangups 
+
+> Third party command line client for Google Hangouts.
+
+- Start hangups:
+
+`hangups`
+
+- View troubeshooting information and help:
+
+`hangups -h`
+
+- Set a refresh token for hangups:
+
+`hangups --token-path {{/path/to/token}}`