Performance Benchmarks on other GCs

[captkirk88]

Have you benchmarked your ECS on all 4 Java garbage collectors?

1. Serial Garbage Collector
2. Parallel Garbage Collector
3. CMS Garbage Collector
4. G1 Garbage Collector

There might be some I missed.

A benchmark on all 4 and displayed in your README would really help in determining if your ECS is truly the fastest in Java.