v0.8: README draft, configuration

README.md

@@ -1,3 +1,15 @@
 # BlockyGrapher
-
-Query grapher for Blocky DNS Server
+Query grapher for Blocky DNS Server
+## Install python packages
+Debian-based:
+```bash
+# install system packages
+apt install i2c-tools python3-dev python3-pip python3-numpy libfreetype6-dev libjpeg-dev build-essential
+# Give user permission to use i2c interface (Replace user with your name). Remember that you need re-login to user after this (You can reboot too if it didn't work for some reason).
+usermod -a -G i2c user
+# install python packages
+pip install -r requirements.txt --break-system-packages
+```
+## Finding right port
+`i2cdetect -l` can help to find port you need to use.
+Schematics for your adapter/board can also help.