Move song to more appropriate location

build/git-post-receive-hook

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+
+while read precommit postcommit refname
+do
+    echo "precommit: ${precommit}; postcommit: ${postcommit}; refname: ${refname}"
+    if [[ "${precommit}" != "0000000000000000000000000000000000000000" ]]; then
+        git diff --name-status $precommit $postcommit
+    fi
+done