Add gitter bridges

supporting-docs/projects/2016-02-10-matrix-appservice-gitter.md

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+---
+layout: project
+title: matrix-appservice-gitter
+categories: projects as
+author: LeoNerd
+maturity: Early beta
+---
+
+# {{ page.title }}
+This project bridges [Gitter](https://gitter.im) to Matrix, via the AS API on the Matrix side, and a Gitter user on the Gitter side.
+
+Get it from [github](https://github.com/matrix-org/matrix-appservice-gitter).

supporting-docs/projects/2016-07-29-matrix-appservice-rocketchat.md

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+---
+layout: project
+title: matrix-appservice-rocketchat
+categories: projects as
+author: oddvar
+maturity: Early beta
+---
+
+# {{ page.title }}
+This project bridges [Rocket Chat](https://rocket.chat) to Matrix. This uses Rocket Chat's webhooks directly (there is also a Hubot-solution - see the [Rocket Chat federation](http://matrix.org/docs/projects/as/rocket-chat-federation.html) project).
+
+Get it from [github](https://github.com/matrix-org/matrix-appservice-rocketchat).

supporting-docs/projects/2016-08-10-matrix-appservice-gitter-twisted.md

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+---
+layout: project
+title: matrix-appservice-gitter-twisted
+categories: projects as
+author: Remi Rampin
+maturity: Early beta
+---
+
+# {{ page.title }}
+This is a Python 2 application using Twisted that bridges the Matrix chat network with the Gitter system.
+
+This is supposed to be deployed as a Matrix application service alongside a homeserver. It allows users to log in to their personal Gitter accounts and chat in Gitter rooms via their Matrix client.
+
+Contrary to other bridges, this doesn't link a public Matrix room with a Gitter one. You won't be able to join a Gitter room without a Gitter account. On the other hand, Gitter users won't see the difference between a Matrix user and a normal Gitter user, since they will appear to be chatting natively.
+
+Get it from [github](https://github.com/remram44/matrix-appservice-gitter-twisted).