This repository is more than 5+ years old and not maintained so I'm not sure if still working and very likely Instagram API have been changed therefore use this repository as base/reference to your work. Oh and looks like Lollagram domain was bought and is now a porn website.
Instagram Real Time App (deprecated)
To learn a little bit more of NodeJS, Socket.IO and for fun I developed the new version of Lollagram consuming Instagram Real Time API.
Feel free to ask me anything and I will do my best to answer any question.
Lollagram is a labor of love that’s designed to help you keep track of the Lollapalooza experience, through the eyes (or, more accurately, snapshots) of music lovers on the ground at Grant Park. Lollagram takes advantage of the Instagram Real Time API and aggregates the moments at Lollapalooza, creating a visual record of the bands, food, people, and city that make up this great musical tradition. With 45 million photos being uploaded to Instagram each day, we're excited to present snapshots from Lollapalooza 2013.
detailed blog post on my website
Simple step-by-step checking http://git.io/Ry1fEA