diff --git a/README.md b/README.md
index cfa31fd..d5f49db 100644
--- a/README.md
+++ b/README.md
@@ -4,11 +4,16 @@ A terminal-based mindmap editor for geeks.
 
 The name of the project comes from the Greek words _νους_ (mind) and  _ζούδι_ (small animal).
 
+For now, It is a toy project to improve author's skills with the language and its various libraries. **It is very early stage and is not supposed to work (yet). Please don't use it in production.** :warning:
+
+
 ## Installation
 
-Type the following line in your favorite terminal:
+Make sure you have the latest version of crystal (0.35.x)
 
-    $ gem install noozoid
+Build the project
+
+    $ make build
 
 ## Usage
 
@@ -16,7 +21,7 @@ Type the following line in your favorite terminal:
 
 In your terminal:
 
-    $ noozoid [gui]
+    $ _build/noozoid
 
 ### Keyboard control
 
@@ -34,21 +39,9 @@ In your terminal:
 | q | Exit program |
 
 
-## Development
-
-After checking out the repo, run `bin/setup` to install dependencies. You can also run `bin/console` for an interactive prompt that will allow you to experiment.
-
-To install this gem onto your local machine, run `bundle exec rake install`. To release a new version, update the version number in `version.rb`, and then run `bundle exec rake release`, which will create a git tag for the version, push git commits and tags, and push the `.gem` file to [rubygems.org](https://rubygems.org).
-
-
 ## Contributing
 
 Bug reports and pull requests are welcome on GitHub at https://github.com/glenux/noozoid.
 
 
-## References
-
-* <https://stac47.github.io/ruby/curses/tutorial/2014/01/21/ruby-and-curses-tutorial.html>
-
-