Add content for templating engines (#2153)

* Update readme.md

* Update content/roadmaps/107-nodejs/content/109-nodejs-template-engines/readme.md

* Update content/roadmaps/107-nodejs/content/109-nodejs-template-engines/readme.md

Co-authored-by: Kamran Ahmed <kamranahmed.se@gmail.com>

content/roadmaps/107-nodejs/content/109-nodejs-template-engines/readme.md

@@ -1 +1,12 @@
-# Nodejs template engines
+# Template Engines
+
+Template engine helps us to create an HTML template with minimal code. Also, it can inject data into HTML template at client side and produce the final HTML.
+
+Some examples of template engines in Node.js are:
+
+- Nunjucks
+- Jade
+- Vash
+- EJS
+- Handlebars
+- HAML