This is a web application which is similar to the way Instagram works. (Comments and likes to pics not supported).
To run it:
Set up express framework and create a project.
Replace the corresponding files in the created project with the files from the repository.
Dont forget to setup a mongoDB for this and specify the details of the database appropriately in the code.
#Tip : You can use the mongoDB available on the code. Simple to incorporate it. https://mlab.com/
Thats all. You're good to go.