Setting up Google People OAUTH2 service

1. Register app in Google API Console

Log in to Google and access this link: Google dev console - Register APP to People API

1. If no project has been created previously, select "Create new Project".
2. Click continue, this will create a project with a random name and redirect to the API console.

2. Create Credentials

1. Log in to Google APIs & Services.
2. Select the project registered in step 1.
3. Open the "Credentials" section.
4. Set the following config:

API: People API
Calling from: Web server (node.js, ...)
Data: User data

5. Define Javascript origin and redirect (for development):

origin: http://nucleotid-dev.com:3000/login/google
redirect: http://nucleotid-dev.com:3000/login/google/return

6. Enable Google+ API in Google API library.
7. Get Client ID and Client secret keys, copy them in info/node-env.