adds script to copy all hooks to git dir

run.d/01_install_hooks.bash

+#!/bin/bash
+
+set -e
+
+SRC_HOOKDIR="$(cd "$(dirname ${BASH_SOURCE[0]})/../hooks" ;  pwd -P )"
+# this _might_ fail with git >= 2.9 if core.hooksPath is set
+DST_HOOKDIR="$(git rev-parse --git-dir)/hooks"
+
+cp -a ${SRC_HOOKDIR}/* ${DST_HOOKDIR}