Added fiddle as a dep

Author: bendangelo

pycall.gemspec

@@ -36,6 +36,8 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
   spec.extensions    = ["ext/pycall/extconf.rb"]
 
+  spec.add_dependency 'fiddle', '>= 1.0.0'
+
   spec.add_development_dependency "bundler"
   spec.add_development_dependency "rake"
   spec.add_development_dependency "rake-compiler"