add source code uri

Author: maxamus123

acts_as_versionable.gemspec

@@ -16,7 +16,7 @@ Gem::Specification.new do |spec|
   spec.metadata["allowed_push_host"] = "TODO: Set to your gem server 'https://example.com'"
 
   spec.metadata["homepage_uri"] = spec.homepage
-  spec.metadata["source_code_uri"] = "TODO: Put your gem's public repo URL here."
+  spec.metadata["source_code_uri"] = "https://github.com/StrongMind/acts-as-versionable"
   spec.metadata["changelog_uri"] = "TODO: Put your gem's CHANGELOG.md URL here."
 
   # Specify which files should be added to the gem when it is released.