add README first version

README.md

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+# Dependencies
+
+- python3
+- nginx
+- sopel
+
+
+## Install
+
+```
+cd ~/Eingangsschalter
+sudo ./install.sh
+```
+
+### Afterwards
+- configurate nginx
+- configurate sopel
+  - edit ~/.sopel/default.cfg
+  - restart ircbot with `sudo systemctl restart ircbot` or run `sudo ./install.sh` again
+
+## Update
+```
+cd ~/Eingangsschalter
+git pull
+sudo ./install.sh
+```