Don’t raise a hard error if a route is not present.

README.md

@@ -27,7 +27,7 @@ However, more packages may need to be installed depending on your OS distributio
 After reviewing the dependency requirements, add `critical-path-css-rails` to your Gemfile:
 
 ```
-gem 'critical-path-css-rails', '~> 3.0.0'
+gem 'critical-path-css-rails', '~> 3.1.0'
 ```
 
 Download and install by running:

lib/critical_path_css/css_fetcher.rb

@@ -46,7 +46,7 @@ def fetch_route(route)
       if !st.exitstatus.zero? || out.empty? && !err.empty?
         STDOUT.puts out
         STDERR.puts err
-        raise "Failed to get CSS for route #{route}\n" \
+        STDERR.puts "Failed to get CSS for route #{route}\n" \
               "  with options=#{options.inspect}"
       end
       out

lib/critical_path_css/rails/version.rb

@@ -1,5 +1,5 @@
 module CriticalPathCSS
   module Rails
-    VERSION = '3.0.3'.freeze
+    VERSION = '3.1.0'.freeze
   end
 end