update gem metadata to reflect new version bump (#503)

Author: shiftkey

up_for_grabs_tooling.gemspec

@@ -1,6 +1,6 @@
 Gem::Specification.new do |s|
   s.name        = 'up_for_grabs_tooling'
-  s.version     = '0.2.0'
+  s.version     = '0.3.0'
   s.licenses    = ['MIT']
   s.summary     = "Tooling for Up-For-Grabs infrastructure"
   s.description = "This gem is used to simplify the heavy-lifting that infrastructure scripts for Up-For-Grabs uses. As it's very specific to the Up-For-Grabs project, you don't need to use this yourself."
@@ -9,8 +9,8 @@ Gem::Specification.new do |s|
   s.files       = `git ls-files -z`.split("\x0").reject do |f|
     f.match(%r{^(test)/})
   end
-  s.homepage    = 'https://github.com/up-for-grabs/up-for-grabs-gem'
-  s.metadata    = { "source_code_uri" => "https://github.com/up-for-grabs/up-for-grabs-gem" }
+  s.homepage    = 'https://github.com/up-for-grabs/tooling'
+  s.metadata    = { "source_code_uri" => "https://github.com/up-for-grabs/tooling" }
 
   s.add_runtime_dependency 'safe_yaml', '~> 1.0'
   s.add_runtime_dependency 'octokit', '>= 5.6', '< 11.0'