benchmarks for primitives: more humane humanisation
benchmarks for primitives: more humane humanisation

- unit for rate changed to bits per sec with K, M, G meaning 10^3,
  10^6 and 10^9 respectively. This allows for better comparison with
  network speeds.

- quantities restricted to 2 places of decimal

piyush-kurur/raaz,raaz-crypto/raaz,piyush-kurur/raaz,raaz-crypto/raaz