Remove docs and changelog from package, add URLs to metadata

activerecord-multi-tenant.gemspec

@@ -18,11 +18,17 @@ Gem::Specification.new do |spec|
   spec.files = IO.popen(%w[git ls-files -z], chdir: __dir__, err: IO::NULL) do |ls|
     ls.readlines("\x0", chomp: true).reject do |f|
       (f == gemspec) ||
-        f.start_with?(*%w[bin/ test/ spec/ features/ .git .github Appraisals appveyor Gemfile])
+        f.start_with?(*%w[bin/ docs/ test/ spec/ features/ .git .github Appraisals appveyor Gemfile CHANGELOG])
     end
   end
   spec.require_paths = ['lib']
   spec.homepage = 'https://github.com/citusdata/activerecord-multi-tenant'
+
+  spec.metadata['homepage_uri'] = spec.homepage
+  spec.metadata['source_code_uri'] = spec.homepage
+  spec.metadata['changelog_uri'] = "https://github.com/citusdata/activerecord-multi-tenant/blob/v#{spec.version}/CHANGELOG.md"
+  spec.metadata['documentation_uri'] = 'https://activerecord-multi-tenant.readthedocs.io'
+
   spec.license = 'MIT'
 
   spec.add_dependency 'rails', '>= 6'