To install lmdb++, just copy the "lmdb++.h" header file to a location of
your choosing. To make it available system-wide, you'd normally copy it to
/usr/local/include. Alternatively, you can embed it directly in your
project.

If you have `meson', a meson.build is provided to facilitate installation:

    meson setup build; meson install -C build	#install

    meson compile remove -C build		#uninstall

To facilitate packaging, the meson.build rules honor the DESTDIR and PREFIX
variables, in case values are provided for those.
