test: Update build setup

README.md

@@ -117,50 +117,7 @@ Some methods are provided for advanced use cases:
 
 Project created by [Mattia Roccoberton](http://blocknot.es), thanks also to the good guys that opened issues and pull requests from time to time.
 
-There 3 ways to interact with this project:
-
-1) Using Docker:
-
-```sh
-# Run rails server on the dummy app (=> http://localhost:3000 to access to ActiveAdmin):
-make up
-# Enter in a Rails console (with the dummy app started):
-make console
-# Enter in a shell (with the dummy app started):
-make shell
-# Run the linter on the project (with the dummy app started):
-make lint
-# Run the test suite (with the dummy app started):
-make specs
-# Remove container and image:
-make cleanup
-# To try different versions of Ruby/Rails/ActiveAdmin edit docker-compose.yml
-# For more commands please check the Makefile
-```
-
-2) Using Appraisal:
-
-```sh
-export RAILS_ENV=development
-# Install dependencies
-bin/appraisal
-# Run server (or any command)
-bin/appraisal rails s
-# Or with specific versions
-bin/appraisal rails71-activeadmin rails s
-```
-
-3) With a local setup:
-
-```sh
-# Dev setup (set the required envs)
-source extra/dev_setup.sh
-# Install dependencies
-bundle
-# Run server (or any command)
-bin/rails s
-# To try different versions of Rails/ActiveAdmin edit extra/dev_setup.sh
-```
+For development information please check [this document](extra/development.md).
 
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