<NME> version.rb
<BEF> module StripeTester
  VERSION = "0.2.0"
end

<MSG> update gem version to 0.3.0

<DFF> @@ -1,3 +1,3 @@
 module StripeTester
-  VERSION = "0.2.0"
+  VERSION = "0.3.0"
 end

update gem version to 0.3.0