Add dbus info to readme

README.md

@@ -66,6 +66,7 @@ Install dependencies:
 * cairo
 * gdk-pixbuf2 *
 * pam **
+* dbus >= 1.10 ***
 * imagemagick (required for image capture with swaygrab)
 * ffmpeg (required for video capture with swaygrab)
 
@@ -73,6 +74,8 @@ _\*Only required for swaybar, swaybg, and swaylock_
 
 _\*\*Only required for swaylock_
 
+_\*\*\*Only required for tray support_
+
 Run these commands:
 
     mkdir build