Installing Date::Calc::Endpoints
INSTALLATION WITH CPANMINUS
    If you have cpanm:
        % cpanm Date::Calc::Endpoints
    If you are installing into a system-wide directory, you may need to pass
    the "-S" flag to cpanm, which uses sudo to istall the module:
        % cpanm -S Date::Calc::Endpoints
INSTALLATION WITH THE CPAN SHELL
    Alternatively, if your CPAN shell is set up, you should just be able to
    do:
            % cpan Date::Calc::Endpoints
MANUAL INSTALLATION
    As a last resort, you can manually install it. Download the tarball and
    unpack it.
    Consult the file MYMETA.json for a list of pre-requisites. Install these
    first.
    To build Date-Range:
            % perl Makefile.PL
            % make && make test
    Then install it:
            % make install
    If you are installing into a system-wide directory, you may need to run:
            % sudo make install