Switch from screenfetch to neofetch

As far as external motd programs go, neofetch seems to be
better-maintained than screenfetch, and has some features I prefer like
incremental printing and a fairly robust configuration.

src/.bashrc

@@ -244,8 +244,8 @@ function _bashrc_randomcolor {
 
 # prints a message of the day (time, shell info, system info, etc.)
 function _bashrc_motd {
-	if type screenfetch >/dev/null 2>/dev/null; then
+	if type neofetch >/dev/null 2>/dev/null; then
-		screenfetch 2>/dev/null
+		neofetch 2>/dev/null
 		return
 	fi