minor fixes and added docs

tests/run_tests.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/usr/bin/env bash
 
 cd "$(dirname "$0")"
 
@@ -31,6 +31,5 @@ if [[ "$ERROR" == "0" ]] then
 	python3 benchmark.py -p $PASSWORD -r 5 -d 1 -s 10 || ERROR=1
 fi
 
-
 exit $ERROR