update readme, add ss

README.md

@@ -1 +1,25 @@
-# lightbox
+# Lightbox Assignment
+
+A web app that displays Flickr photo grid with lightbox view. Implemented with vanilla JavaScript.
+
+![App screen shot](src/assests/images/lb-ss.png?raw=true)
+
+## Live demo
+
+[https://s3.amazonaws.com/light-box/index.html](https://s3.amazonaws.com/light-box/index.html)
+
+## Install
+
+1. Install [brew](http://brew.sh/): `ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"`
+
+2. Install git and node: `brew install git node`
+
+3. Install gulp globally by running: `npm install -g gulp`
+
+4. Clone project: `git clone https://github.com/mistermendez/lightbox.git`
+
+5. After cloning, just `cd` in there, install dependencies by running `npm install`
+
+6. Build the project by running `gulp`
+
+7. Open in `/dist/index.html` browser.