README.md in sleeping_kangaroo12-0.0.5 vs README.md in sleeping_kangaroo12-0.0.6

@@ -43,18 +43,24 @@
 - GCC, the GNU Compiler Collection; our favorite
 - GNU make
 - xsltproc executable, normally comes with libxslt package
 - Ruby related stuffs
 
+### TL;DR for Ubuntu-liked OS
+
+~~~bash
+sudo apt install build-essential xsltproc
+~~~
+
 ## Installation
 
 Add this line to your application's Gemfile:
 
 ~~~ruby
 gem 'sleeping_kangaroo12'
 ~~~
 
-And then execute:
+Check the [prerequisites](#prerequisites); and then execute:
 
     $ bundle install
 
 ## Usage Examples