replaced 'bin/bash' with 'usr/bin/env bash' for better compatibility (#216)

install.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 RED='\033[0;31m'
 GREEN='\033[0;32m'
@@ -256,7 +256,7 @@ _parse_args() {
         fi
 
         case ${argv[j]} in
-        --*) # End of all options.
+        --*) # End of all opt
             case ${argv[j]} in
             --) # End of all options.
                 break