Merge pull request #175 from gregf/fix_bash_path

Fix bash path to be more linux/bsd agnostic

src/musikcube/musikcube.in

@@ -1,5 +1,5 @@
-#!/bin/bash
+#!/usr/bin/env bash
 pushd @musikcube_INSTALL_DIR@/share/musikcube/ > /dev/null
 {
   ./musikcube && popd
-} || popd > /dev/null
+} || popd > /dev/null