update license on gemspec

Author: hsbt

xmlrpc.gemspec

@@ -12,7 +12,7 @@ Gem::Specification.new do |spec|
   spec.summary       = %q{TODO: Write a short summary, because Rubygems requires one.}
   spec.description   = %q{TODO: Write a longer description or delete this line.}
   spec.homepage      = "TODO: Put your gem's website or public repo URL here."
-  spec.license       = "MIT"
+  spec.license       = "Ruby"
 
   spec.files         = `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   spec.bindir        = "exe"