make install installs everything but the binary

[alanorth]

I just built artic-tools on our cluster and was surprised to see a make install present, but it only installs various libs and includes, not the binary.

I built artic-tools from git tag 0.3.1 like this:

$ cmake .. -DHTS_LIB=/global/apps/htslib/1.15.1/lib/libhts.so -DHTS_INCLUDE_DIR=/global/apps/htslib/1.15.1/include/ -DCMAKE_INSTALL_PREFIX=/global/apps/artic-tools/0.3.1
$ make -j4
$ make test
$ make install

The README.md actually implies that we only need to copy the binary so maybe this install target could be removed? Leaving this issue here for future travelers who don't use conda. Thank you!