We should include an install target; with the following voodo

    install(TARGETS keyworddescriber DESTINATION "bin")

The keyword describer will be installed in ${CMAKE_INSTALL_PREFIX}/bin when the command `make install` is invoked. 

I personally think and hope that this small application will get some use, and it should have a good name. This is of course easy to change at a later stage, but in my opinion a good name is:

1. Quite short and easy to type
2. Contains the 'opm' acronym.
3. Contains a reference to Eclipse (ecl is a quite well established shorthand).

opm-ecl?