Remove ALSA dependency from README

ALSA is not a dependency anymore as we use /dev/mixer. The corresponding notice about PulseAudio is thus not necessary too.
6 years ago · 198df15d83
--- a/+ 1
+++ b/+ 1
@@ -31,8 +31,7 @@ Features

 Requirements
 ------------
 In order to build slstatus you need the Xlib header files and optionally ALSA
 for volume percentage. PulseAudio is not supported for various reasons.
 In order to build slstatus you need the Xlib header files.


 Installation