add erlang, more-complex shell examples

- some Erlang and escript files
 - .escript extension
 - .erlang extension
 - shell script with %, ##, name tokens

samples/Shell/string-chopping.script!

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+name=foodforthought.jpg
+echo ${name##*fo}