load_tutu

function {
    local BASE_DIR=${TUTU_BASE_DIR:=$HOME/.tutu}
    local CORE_DIR=$BASE_DIR/lib/core

    declare -a required_files=(
       tutu
       completion
    );

    declare -a optional_files=(
    );

    local error=0
    for required in $required_files; do
        full_path=$CORE_DIR/$required
        if [[ -f $full_path ]]; then
            echo "Loading $full_path";
            source $full_path
        else
            echo "Required file: '$full_path' is missing."
            echo 'tutu not installed yet!  Run "make install" or follow the README instructions'
            error=1; 
        fi
    done

    for optional in $optional_files; do
        if [[ !error && -f $optional ]]; then
            echo "Loading $full_path";
            source $optional
        fi
    done
}