README.md in chaltron-1.0.0 vs README.md in chaltron-1.0.1

@@ -3,10 +3,18 @@
 [![Coverage Status](https://coveralls.io/repos/vicvega/chaltron/badge.svg?branch=master&service=github)](https://coveralls.io/github/vicvega/chaltron?branch=master)
 [![Code Climate](https://codeclimate.com/github/vicvega/chaltron/badges/gpa.svg)](https://codeclimate.com/github/vicvega/chaltron)
 [![PullReview stats](https://www.pullreview.com/github/vicvega/chaltron/badges/master.svg?)](https://www.pullreview.com/github/vicvega/chaltron/reviews/master)
 [![security](https://hakiri.io/github/vicvega/chaltron/master.svg)](https://hakiri.io/github/vicvega/chaltron/master)
 
+## Important note
+
+**The latest chaltron release (1.x) targets bootstrap v4.**
+
+If you are using bootstrap v3, refer to the  [bootstrap3](https://github.com/vicvega/chaltron/tree/bootstrap3) branch (chaltron version 0.x).
+
+## Usage
+
 In a fresh new rails application simply add to your `Gemfile`
 ```ruby
 gem 'chaltron'
 ```
 and install
@@ -42,10 +50,10 @@
 
 Chaltron is powered by
 
  * [devise](https://github.com/plataformatec/devise/)
  * [cancancan](https://github.com/CanCanCommunity/cancancan/)
- * [bootstrap](https://github.com/twbs/bootstrap-sass)
+ * [bootstrap](https://github.com/twbs/bootstrap-rubygem)
  * [font-awesome](https://github.com/FortAwesome/font-awesome-sass)
  * [datatables](http://datatables.net/)
 
 Refer to [wiki pages](https://github.com/vicvega/chaltron/wiki) for further instructions