i3, .xinitrc: Polish

Also update Concesssion

.xinitrc

@@ -0,0 +1,22 @@
+#!/bin/sh
+#
+# Salt's .xinitrc
+# Copyright (C) 2018 salt <salt@lap-th-e560-0>
+#
+# Distributed under terms of the MIT license.
+#
+
+# Set up our session target
+which i3 > /dev/null 2>&1 && export STARTUP="i3"
+which bspwm > /dev/null 2>&1 && export STARTUP="bspwm"
+[ -x "$HOME/.concession/conspiracy" ] && export STARTUP="$HOME/.concession/conspiracy"
+
+# Execute Xsession stuff
+[ -r /etc/X11/Xsession ] && . /etc/X11/Xsession
+
+# Do the do
+[ -z "${STARTUP+x}" ] || exec "$STARTUP"
+
+# Or maybe just die, I guess
+echo "Failed to start Concession!" >&2
+exit 1