Update README.md

Author: Daniel de la Cruz

README.md

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 # react-feature-toggle
-
-## Introduction
 React Feature Toggle is a proof of concept of a [Higher Order Component](https://gist.github.com/sebmarkbage/ef0bf1f338a7182b6775) to implement [feature toggles](http://martinfowler.com/bliki/FeatureToggle.html).
 
+##What is a feature toggle?
+**_Continuous deployment_** is the process of testing, integrating, and deploying software in rapid cycles in order to deliver bug fixes and new features to customers as quickly as possible. It gained popular acceptance as a cornerstone of extreme programming and agile development. It is very popular among Software as a Service providers.
+
+A **_feature toggle_** system allows you to integrate features into your codebase even before they're finished and ready to release. During development, the features are toggled off by default. In order to turn them on, you must enable them manually. Using this method, you can deploy unfinished or untested changes into your production system without interfering with the user experience.
+
+Feature toggles can allow software integration cycles that run in weeks, days, or even hours, as opposed to months or years. They are an essential component in a broader continuous integration system.
+([via](https://github.com/ericelliott/feature-toggle))
+
 ## How to use it
 First of all, create your component as if it were to receive by props an array with feature toggles: