Merge pull request #226 from kishikawakatsumi/fix-coverage

Fix code coverage

Lib/Gemfile.lock

@@ -1,10 +1,10 @@
 GEM
   remote: https://rubygems.org/
   specs:
-    rake (10.4.2)
-    rouge (1.10.1)
-    xcjobs (0.2.5)
-    xcpretty (0.2.1)
+    rake (11.2.2)
+    rouge (1.11.1)
+    xcjobs (0.4.0)
+    xcpretty (0.2.2)
       rouge (~> 1.8)
 
 PLATFORMS