set sxhkd to autostart on xinit

Checks for existence of the program, and then starts it. Does nothing if
sxhkd is not installed (fails silently).

.xinitrc

@@ -55,6 +55,9 @@ type compton >/dev/null 2>&1 && compton &
 # same deal with flashfocus as our active window indicator
 type flashfocus >/dev/null 2>&1 && flashfocus -l never &
 
+# if sxhkd - the key-binding daemon is installed, start it up
+type sxhkd >/dev/null 2>&1 && sxhkd &
+
 # additional config options for Touchpad devices ONLY
 if [ $(dmesg | grep "Touchpad" | wc -l) > 0 ]; then
   # enable touch tapping for XPS13 touchpad - for different devices get the touchpad name with xinput list-prop <TAB>