Update digitalocean deploy

Deploy:-Digitalocean.md

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+# Running on digitalocean
+
+![image](https://user-images.githubusercontent.com/1810977/75629065-2ed88d80-5bdf-11ea-91d8-30b7d2b93c7d.png)
+
+## Droplet install
+
+After you have setup your droplet using eg ubuntu 18.04 TLS (https://www.digitalocean.com/community/tutorials/initial-server-setup-with-ubuntu-18-04-)
+
+## Create a matterbridge user
+
+``bash
+$ sudo adduser --system --no-create-home --group matterbridge
+Adding system user `matterbridge' (UID 111) ...
+Adding new group `matterbridge' (GID 115) ...
+Adding new user `matterbridge' (UID 111) with group `matterbridge' ...
+Not creating home directory `/home/matterbridge'.
+``
+
+## Matterbridge install
+
+You can install the matterbridge binary in /usr/bin/matterbridge
+
+``bash
+$ sudo wget https://github.com/42wim/matterbridge/releases/download/v1.16.5/matterbridge-1.16.5-linux-64bit -O /usr/bin/matterbridge
+$ sudo chmod 755 /usr/bin/matterbridge
+``
+
+## Matterbridge configuration
+
+Now follow these [steps](https://github.com/42wim/matterbridge/wiki/How-to-create-your-config) to create your configuration.
+
+Save that file to /etc/matterbridge/matterbridge.toml
+
+``bash
+$ sudo mkdir /etc/matterbridge
+$ sudo cp matterbridge.toml /etc/matterbridge/matterbridge.toml
+``
+
+Before going to the next step, check if your config is correct by running manually
+
+``bash
+$ /usr/bin/matterbridge -conf /etc/matterbridge/matterbridge.toml
+``
+
+If everything looks fine you can set it up as a systemd service
+
+## Matterbridge running as systemd service
+
+Next up is creating a `matterbridge.service`
+
+``
+[Unit]
+Description=matterbridge
+After=network.target
+
+[Service]
+ExecStart=/usr/bin/matterbridge -conf /etc/matterbridge/matterbridge.toml
+User=matterbridge
+Group=matterbridge
+
+[Install]
+WantedBy=multi-user.target
+``
+
+Save the above config as `/etc/systemd/system/matterbridge.service`
+
+Now enable and run it
+
+``bash
+sudo systemctl daemon-reload
+sudo systemctl enable matterbridge
+sudo systemctl run matterbridge
+``
+
+You should now have the service running.