Make README documentation clearer for Viewers section

Author: Chris Drane

README.md

@@ -60,6 +60,10 @@ Consider adding a viewer to enhance the generated documentation. By itself rspec
 
     gem 'raddocs'
 
+    or 
+
+    gem 'apitome'
+
 #### spec/spec_helper.rb
 
 ```ruby
@@ -68,6 +72,15 @@ RspecApiDocumentation.configure do |config|
 end
 ```
 
+####
+For both raddocs and apitome, start rails server. Then
+
+    open http://localhost:3000/docs for raddocs
+
+    or
+
+    http://localhost:3000/api/docs for apitome
+
 ## Sample App
 
 See the `example` folder for a sample Rails app that has been documented.