Update dependencies

Author: randoum

README.md

@@ -9,3 +9,19 @@ To use and maintain this library, please see the following:
 - [Javascript Email Validation](https://github.com/abstractapi/javascript-email-validation)
 - [Javascript IP Geolocation](https://github.com/abstractapi/javascript-ip-geolocation)
 - [Javascript Phone Validation](https://github.com/abstractapi/javascript-phone-validation)
+
+# NPM
+
+### Installation
+
+Run `npm install` in the command line to install the dependencies. To update those dependencies you need to run `npm update`.
+
+### Building
+
+To build the library and generate the minified file in the *dist* directory, you need to run `npm run build`.
+
+To build the lib, you need to run `npm run build:lib`.
+
+### Test
+
+To run the test suite, you need to run: `npm run test`.