Add pry gem for easy debugging

Gemfile

@@ -2,6 +2,7 @@ source 'https://rubygems.org'
 
 group :development, :test do
   gem 'listen', '~> 0.5.0'
+  gem 'pry', '~> 0.12.2'
   gem 'rspec', '~> 3.8.0'
   gem 'rspec-parameterized', '~> 0.4.0'
   gem 'rubocop', '0.49.1', require: false

Gemfile.lock

@@ -25,6 +25,7 @@ GEM
     listen (0.5.3)
     memoizable (0.4.2)
       thread_safe (~> 0.3, >= 0.3.1)
+    method_source (0.9.2)
     multi_json (1.13.1)
     parallel (1.12.1)
     parser (2.5.1.2)
@@ -35,6 +36,9 @@ GEM
       parser
       unparser
     procto (0.0.3)
+    pry (0.12.2)
+      coderay (~> 1.1.0)
+      method_source (~> 0.9.0)
     public_suffix (3.0.3)
     rainbow (2.2.2)
       rake
@@ -93,6 +97,7 @@ PLATFORMS
 
 DEPENDENCIES
   listen (~> 0.5.0)
+  pry (~> 0.12.2)
   rspec (~> 3.8.0)
   rspec-parameterized (~> 0.4.0)
   rubocop (= 0.49.1)

spec/spec_helper.rb

+require 'pry'
 require 'rspec-parameterized'
 require 'simplecov'
 SimpleCov.start