Update README.

Author: valdeci-dev

README.md

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-# Test-driven Rails with RSpec, Capybara, and Cucumber
+# Test-driven Rails with RSpec, Capybara and Cucumber Examples
+
+This project contains some examples of how use TDD with Ruby on Rails.
+
+### Used technologies
+
+The main technologies used in this project were:
+
+* [Capybara](https://) - Capybara description.
+* [Rspec](https://) - Rspec description.
+* [Cucumber](https://) - Cucumber description.
+