Drop the bundle warning about insecure git sources

gsamokovarov · gsamokovarov · commit 2cb56f1a5619 · 2018-09-02T21:52:57.000+03:00
diff --git a/Gemfile b/Gemfile
@@ -2,6 +2,8 @@
 
 source "https://rubygems.org"
 
+git_source(:github) { |repo| "https://github.com/#{repo}.git" }
+
 gemspec
 
 gem "rails", github: "rails/rails"
