Relax dependency for rspec-parameterized-core v2

Author: sue445

rspec-parameterized-table_syntax.gemspec

@@ -33,7 +33,7 @@ I was inspired by [udzura's mock](https://gist.github.com/1881139).}
   spec.require_paths = ["lib"]
 
   spec.add_dependency "binding_of_caller"
-  spec.add_dependency "rspec-parameterized-core", "< 2"
+  spec.add_dependency "rspec-parameterized-core", ">= 2", "< 3"
 
   spec.add_development_dependency "rake"
   spec.add_development_dependency "rspec"