t2-upgrade-in-place

1. git clone https://github.com/rwaldron/t2-upgrade-in-place.git
2. cd t2-upgrade-in-place
3. Open two terminals, side by side
4. In one, run node index.js
5. In the other, run node client.js
6. Once client.js runs, open the source and observe that the version is 2
7. Re-run node client.js
8. Once client.js runs, open the source and observe that the version is 1
9. Repeating this will change the application version each time, flipping back and forth between 1 and 2.