README.md in source_position-0.0.1 vs README.md in source_position-0.0.2

@@ -1,13 +1,13 @@
 # SourcePosition
 
 Editor friendly source location
 
-Works with ruby 1.9
-
 ## Installation
 
+Ruby 1.8 user, please Install [ruby18_source_location] first.
+
 Add this line to your application's Gemfile:
 
     gem 'source_position'
 
 And then execute:
@@ -48,5 +48,7 @@
 1. Fork it
 2. Create your feature branch (`git checkout -b my-new-feature`)
 3. Commit your changes (`git commit -am 'Added some feature'`)
 4. Push to the branch (`git push origin my-new-feature`)
 5. Create new Pull Request
+
+[ruby18_source_location]: https://github.com/ConradIrwin/ruby18_source_location