Workaround about local bem-tools installation

bbem

#!/usr/bin/env bash

npm_bem=`npm bin`/bem
home_bem=$HOME/bin/bem
global_bem=bem

bem_=$global_bem

if [ -f "$npm_bem" ]; then
    bem_=$npm_bem
elif [ -f "$home_bem" ]; then
    bem_=$home_bem
fi

echo "Using \"$bem_\""
$bem_ $*

unset npm_bem
unset home_bem
unset global_bem
unset bem_

exit 0