added documentation of the HoL
express generator with --ejs option
Added .gitignore
Creating a first route for techs
added middleware for POST on /techs
added vote management
Configuration of persistance
Creation of a  model
use the model
Handling the vote in MongoDB
Preparing the front end part, add Angular to index
Showing list of Scope
connection to the backend for the list of Techs
added form and call for a new Tech
added the vote for Tech