Merge branch 'master' of https://github.com/completejavascript/calculator

Author: completejavascript

README.md

@@ -1,2 +1,13 @@
-# calculator
+# Calculator
+
 A basic Calculator with five functions for addition, subtraction, division, modulo and multiplication.
+
+# Preview
+
+  * [Calculator](http://about.phamvanlam.com/calculator/)
+
+# Visit me
+
+  * [Portfolio](http://about.phamvanlam.com)
+  * [Blog Complete JavaScript](https://completejavascript.com)
+  * [Codepen](https://codepen.io/completejavascript)