add requirements to readme

README.md

@@ -8,6 +8,18 @@ git clone https://will.kein.hk/git/koksnuss/simple-i3blocks.git ~/.config/i3bloc
 ```
 Adjust `~/.config/i3blocks/config` to control i3 status bar output. Finally reload your `i3` window manager. The default shortcut is `mod + SHIFT + r`, you should see a flickering.
 
+# Requirements
+The following shows the requirements for each script:
+```bash
+audio       amixer
+battery     none, searches in /sys/class/power_supply/BAT...
+cpu         top
+datetime    date
+ip          curl
+ram         none, searches in /proc/meminfo
+storage     df
+```
+
 # Roadmap
 - [x] date and time
 - [x] ram