added logo

README.md

@@ -1,5 +1,7 @@
 # systeminformation
 
+![micro-monitor](https://www.plus-innovations.com/images/system-information-100.png)
+
 Simple system and OS information library for [node.js][nodejs-url]
 
   [![NPM Version][npm-image]][npm-url]

lib/util.js

@@ -156,9 +156,11 @@ function powerShell(cmd) {
         result = result + data.toString('utf8');
       });
       child.stderr.on('data', function (data) {
+        child.kill();
         reject(data);
       });
       child.on('close', function () {
+        child.kill();
         resolve(result);
       });
 
@@ -168,7 +170,6 @@ function powerShell(cmd) {
   });
 }
 
-
 function noop() { }
 
 exports.isFunction = isFunction;