update and elaborate in README.rst

Author: Code0x58

README.rst

@@ -12,13 +12,19 @@ Installation
 
 Install the following:
 
-- Docker
-- Python 3
-- Numpy
+- `Docker<https://docs.docker.com/engine/installation/>` (tested with *17.09.0-ce*)
+- Python 3.5+ (tested with *3.5.2*)
+- `numpy<https://pypi.python.org/pypi/numpy>` (tested with *1.13.3*)
+- `wrk<https://github.com/wg/wrk>` (tested with *4.0.0*)
 
 Build the docker image containing the servers being tested by running
 ``./build.sh``.
 
 The benchmarks can then be ran with ``./run_benchmarks``.  Use
 ``./run_benchmarks --help`` for various options, including selective
 benchmark running.
+
+To run the http benchmarks and save results to ``./results.html``:
+.. clode-block:: shell
+
+    ./run_benchmarks http --duration=60 --save-html=results.html