Fix improperly bound regex

spec/spec_helper.rb

@@ -16,7 +16,7 @@ RSpec.configure do |config|
 
   # Stub all GitHub API requests so they come back empty.
   config.before(:each) do
-    stub_request(:get, /api.github.com/)
+    stub_request(:get, /api\.github.com/)
       .to_return(:status => 200, :body => "{}", :headers => {})
   end
 end