Add a Gemfile

2018/ruby/Gemfile

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+source "https://rubygems.org"
+
+git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
+
+gem "pry"

2018/ruby/Gemfile.lock

@@ -0,0 +1,17 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    coderay (1.1.2)
+    method_source (0.9.2)
+    pry (0.12.2)
+      coderay (~> 1.1.0)
+      method_source (~> 0.9.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  pry
+
+BUNDLED WITH
+   1.17.1