This commit enables JSON output for the benchmark tool.
This is an effort to support automated benchmarking, once we do have
such a facility in the future. This closes#37
Signed-off-by: Sayan Nandan <nandansayan@outlook.com>
From now on, tdb-bench has to be run with
`tdb-bench -c <c> -q <q> -s <s>` instead of just using positional args.
Also, we'll keep `tdb-bench`'s version in
sync with the version of `tdb`, just like the others in the project
Signed-off-by: Sayan Nandan <nandansayan@outlook.com>