Update README.md

Author: jhades

README.md

@@ -9,6 +9,8 @@ This course repository is updated to Angular 4, and there is a  package-lock.jso
 
 # Installation pre-requisites
 
+IMPORTANT: Please use NPM 5 or above, to make sure the package-lock.json is used.
+
 For running this project we need and npm installed on our machine. These are some tutorials to install node in different operating systems:
 
 *Its important to install the latest version of Node*
@@ -20,7 +22,7 @@ For running this project we need and npm installed on our machine. These are som
 
 # Installing the Angular CLI
 
-With the following command the angular-cli will be installed globally in your machine, as well as Yarn:
+With the following command the angular-cli will be installed globally in your machine:
 
     npm install -g @angular/cli 
 
@@ -29,12 +31,12 @@ With the following command the angular-cli will be installed globally in your ma
 
 We can install the master branch using the following commands:
 
-    git clone https://github.com/angular-university/angular-advanced-course.git
+    git clone https://github.com/angular-university/angular-security-course.git
 
 This repository is made of several separate npm modules, that are installable separately. For example, to run the au-input module, we can do the following:
 
-    cd angular-advanced-course/au-input
-    yarn
+    cd angular-security-course
+    npm install
 
 Its also possible to install the modules as usual using npm: