IssueID #1104: separated git hook from command script (so it can be run independently)

scripts/validate_examples_hook

@@ -0,0 +1,9 @@
+#!/bin/bash
+
+branch=`git rev-parse --abbrev-ref HEAD`
+script_dir="$(dirname "$(readlink -f "$0")")"
+cd $script_dir
+
+if [[ $branch == "master" ]]; then
+    ./validate_examples
+fi