Add README.md instructions on how to build/run the project

[edvinkuric]

Hello,

thank you very much for this project. I was trying to build it myself, but failed in the process.

What are the exact steps to run this application? After running "npm install" and "npm run serve", i get the following error:

When i tried to install the missing "aws-exports.js" , i get the following error:

Can you help out with this issue?

TODO: -) summarize, which dependencies are needed (like nodejs/vuejs version)? -) Add Build / Run instructions on how to run this project