Now use rdf-spec version 0.3.9

Gemfile.lock

@@ -1,32 +1,32 @@
 GIT
   remote: git://github.com/ruby-rdf/rdf-spec.git
-  revision: a09c6934287885bd161cb0cf28b972a22c50583c
+  revision: 2aea17e8e476f1d2edfc89f49019348c2afe6ece
   specs:
-    rdf-spec (0.3.7)
+    rdf-spec (0.3.9)
       rspec (>= 2.8.0)
 
 PATH
   remote: .
   specs:
-    rdf (0.3.8)
+    rdf (0.3.9)
       addressable (>= 2.2.6)
 
 GEM
   remote: http://rubygems.org/
   specs:
     addressable (2.3.2)
     diff-lcs (1.1.3)
-    rake (0.9.2.2)
-    rspec (2.11.0)
-      rspec-core (~> 2.11.0)
-      rspec-expectations (~> 2.11.0)
-      rspec-mocks (~> 2.11.0)
-    rspec-core (2.11.1)
-    rspec-expectations (2.11.2)
+    rake (10.0.2)
+    rspec (2.12.0)
+      rspec-core (~> 2.12.0)
+      rspec-expectations (~> 2.12.0)
+      rspec-mocks (~> 2.12.0)
+    rspec-core (2.12.0)
+    rspec-expectations (2.12.0)
       diff-lcs (~> 1.1.3)
-    rspec-mocks (2.11.2)
+    rspec-mocks (2.12.0)
     wirble (0.1.3)
-    yard (0.8.2.1)
+    yard (0.8.3)
 
 PLATFORMS
   java