Updated SC2016 (markdown)

SC2016.md

@@ -16,6 +16,10 @@ Single quotes prevent expansion of everything, including variables and command s
 
 If you want to use the values of variables and such, use double quotes instead.
 
+Note that if you have other items that needs single quoting, you can use both in a single word:
+
+    echo '$1 USD is '"$rate GBP"
+
 ### Exceptions
 
 If you want `$stuff` to be a literal dollar sign followed by the characters "stuff", you can ignore this message.