Including some new instructions in README file

Author: andreealencar

README.md

@@ -4,10 +4,26 @@
 
 > API for ZSSN (Zombie Survival Social Network)
 
+## Setup choices
+
+I dockerized this API because i don't know nothing about evaluator machine, so i recommend user docker.
+I used some gems like interactor and shoulda-matchers to target best practices in development like `skinny controller and fatty models`. I did all asked features in gist and write tests to cover all source code, you can see coverage executing tests (see section bellow) and open `index.html` in coverage directory.
+
 ## Dependencies
 
 First, you need to got `Docker` and `docker-compose` installed on your machine to run this project. Access [here](https://docs.docker.com/compose/install/#install-compose) to get instructions of how install theses dependencies.
 
+But if you prefer use your local database, all you have to do is change include adpater gem of your preference in Gemfile, and change `database.yml` file.
+
+```sh
+default: &default
+  adapter: postgresql # <-- your adapter here
+  encoding: unicode
+  host: db            # <-- normally localhost
+  username: postgres  # <-- username
+  password:           # <-- password
+```
+
 ## Install
 
 After properly install `docker-compose`, you can use the command bellow to build:
@@ -27,6 +43,16 @@ docker-compose run survivors-api rails db:drop db:create db:migrate db:seed
 docker-compose up
 ```
 
+## Tests
+
+```sh
+docker-compose run survivors-api rspec
+```
+
+## Access API documentation
+
+`localhost:3000/apipie`
+
 ## Author
 
 - Github: [@andreealencar](https://github.com/andreealencar)