[v1.1] DI improved

Migrate Dependency Injection lib to Awilix (#2)

* lints with standardJS

* removes use strict

* separates electrolyte and awilix applications

* implements first Use Case with awilix

* implements CreateUser with awilix

* implements GetUser with awilix

* implements DeleteUser with awilix

* implements UpdateUser with awilix

* improves UserController readability

* updates README

* adds docs

* fixes tests

* adds coverage report

* moves to root folder