wiringPi: Prepare to distribute as debian package

Signed-off-by: Joshua Yang <joshua.yang@hardkernel.com>
diff --git a/update b/update
index 0f72243..458ab36 100755
--- a/update
+++ b/update
@@ -2,4 +2,4 @@
 
 # update - update source files from master on yakko
 
-rsync -aHx --exclude='*.o' --exclude='*~' -v --delete gordon@yakko:rpi/git/wiringPi/ .
+git pull https://github.com/hardkernel/wiringPi HEAD