Update README.md

README.md

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 clojure-intro-class
 ===================
 
-A pilot project to use Clojure for introductory computer science courses at the University of Minnesota - Morris
+## Introduction
 
-This repository contains both error-related tools, versions of core functions with preconditions, and a string library for beginners.
+A _pilot_ project to use Clojure for introductory Computer Science courses at the University of Minnesota, Morris. The main goal of the project is to provide beginner-friendly tools such as
+more detailed & human-readable error messages and easy-to-use graphics library.
+
+## Features
+
+* error-related tools (GUI to show the errors)
+* versions of core functions with pre-conditions
+* string library for beginners
+
+## Quick Start
+:heavy_exclamation_mark: Make sure [leiningen](https://leiningen.org/) is installed.
+
+Clone and run this repository to see the app in action.
+```
+git clone https://github.com/Clojure-Intro-Course/clojure-intro-class.git
+cd clojure-intro-class
+lein run
+```
+
+This runs the code in `src/intro/test.clj` file. Open your favorite editor
+and write your own code in the file.
+
+If you want to run your code in standard mode, write your code in 
+`src/intro/test_standard.clj` file and run lein with `s` arg.
+```
+lein run s
+```
+
+## License
+TBA :speech_balloon: