Gemfile in index_shotgun-0.3.0 vs Gemfile in index_shotgun-1.0.0

@@ -1,6 +1,19 @@
 source "https://rubygems.org"
 
 # Specify your gem's dependencies in index_shotgun.gemspec
 gemspec
 
-eval(Pathname("gemfiles/databases.gemfile").read)
+group :postgresql do
+  gem "pg"
+end
+
+group :mysql do
+  gem "mysql2"
+end
+
+group :oracle do
+  gem "activerecord-oracle_enhanced-adapter"
+  gem "ruby-oci8"
+end
+
+eval(Pathname("gemfiles/common.gemfile").read)