added gemtest support

Author: afeld

.gemtest

@@ -18,6 +18,8 @@ begin
     s.add_development_dependency(%q<typhoeus>, [">= 0.1.13"])
     s.add_development_dependency(%q<em-http-request>, [">= 0.2.10"])
     s.add_development_dependency(%q<curb>, [">= 0.6.6.0"])
+    
+    s.files.include '.gemtest'
   end
   Jeweler::GemcutterTasks.new
 rescue LoadError