Requires proc_to_ast 0.2.0+

Author: sue445

rspec-parameterized-core.gemspec

@@ -33,7 +33,7 @@ I was inspired by [udzura's mock](https://gist.github.com/1881139).}
   spec.require_paths = ["lib"]
 
   spec.add_dependency "parser"
-  spec.add_dependency "proc_to_ast"
+  spec.add_dependency "proc_to_ast", ">= 0.2.0"
   spec.add_dependency "rspec", ">= 2.13", "< 4"
   spec.add_dependency "unparser"