install.sh in sunzi-1.4.0

- old
+ new

@@ -8,9 +8,10 @@
 # Remove if you're not on Debian/Ubuntu.
 export DEBIAN_FRONTEND=noninteractive
 
 # Add Dotdeb repository. Recommended if you're using Debian. See http://www.dotdeb.org/about/
 # source recipes/dotdeb.sh
+# source recipes/backports.sh
 
 # Update apt catalog and upgrade installed packages
 sunzi.mute "apt-get update"
 sunzi.mute "apt-get -y upgrade"
 