Update README.md

Author: eugene-matvejev

README.md

@@ -13,7 +13,7 @@
 # node.js parameter handler
 
 ## how to install
-`$ npm install node-parameter-handler` or `$ npm install node-parameter-handler --save` to save it in _package.json_
+`$ npm install node-parameter-handler`
 
 ## how to execute
 `$ node node_modules/node-parameter-handler`