fix `rake doc` error

using mrbdoc

fix `rake doc` error
using mrbdoc
f377753b · takahashim · 02a6d866 · f377753b
Commit f377753b authored Oct 09, 2015 by takahashim
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Rakefile Rakefile +6 -1

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--- a/Rakefile
+++ b/Rakefile
@@ -139,5 +139,10 @@ end
 desc 'generate document'
 task :doc do
-  load "#{MRUBY_ROOT}/doc/language/generator.rb"
+  begin
+    sh "mrbdoc"
+  rescue
+    puts "ERROR: To generate documents, you should install yard-mruby gem."
+    puts "  $ gem install yard-mruby"
+  end
 end