Add script for convenient updating of /mit/scripts/wizard

Signed-off-by: Edward Z. Yang <ezyang@mit.edu>

diff --git a/pull.sh b/pull.sh
new file mode 100755 (executable)
index 0000000..993d884
--- /dev/null
+++ b/pull.sh
@@ -0,0 +1,3 @@
+#!/bin/sh
+cd /mit/scripts/wizard
+git pull