Create UsageObserver.js

Author: goodcodd

patterns/observer_pattern/UsageObserver.js

@@ -0,0 +1,8 @@
+const observer = new Observer();
+observer.subscribe((data) => {
+  console.log('Sign up for the fired module one:', data);
+});
+observer.subscribe((data) => {
+  console.log('Sign up for the fired module two:', data);
+});
+observer.notify({ someData: 'Hello' });