add swap support

README.md

@@ -11,13 +11,14 @@ Adjust `~/.config/i3blocks/config` to control i3 status bar output. Finally relo
 # Requirements
 The following shows the requirements for each script:
 ```bash
-audio       amixer
+audio,mic   amixer
 battery     none, searches in /sys/class/power_supply/BAT...
 cpu         top
 datetime    date
 ip          curl
-ram         none, searches in /proc/meminfo
+ram,swap    none, searches in /proc/meminfo
 storage     df
+backlight   none, searches in /sys/class/backlight, intel and ati/amd supported
 ```
 
 # Roadmap
@@ -33,7 +34,7 @@ storage     df
 - [x] cpu
 - [x] backlight
 - [x] microphone
-- [ ] swap
+- [x] swap
 - [ ] wifi/ethernet/bluetooth
 - [ ] external storage with mount
 - [ ] ethernet bandwith