add the to_s method and some tests

.gitignore

@@ -1 +1,2 @@
 Gemfile.lock
+.ruby-*

lib/hashr.rb

@@ -100,6 +100,10 @@ def inspect
     "<#{self.class.name} #{@data.inspect}>"
   end
 
+  def to_s
+    to_h.to_s
+  end
+
   private
 
     def to_key(key)

spec/hashr/delegate/conditional_spec.rb

@@ -1,3 +1,5 @@
+require 'spec_helper'
+
 describe Hashr::Delegate::Conditional do
   let(:klass) { Class.new(Hashr) { include Hashr::Delegate::Conditional } }
 

spec/hashr_spec.rb

@@ -263,4 +263,16 @@ def count
       expect(klass.new.env).to eq(ENV)
     end
   end
+
+  describe 'pry methods' do
+    let(:klass) { Class.new(Hashr) { default foo: { bar: { baz: 'baz' } } } }
+
+    example '#inspect' do
+      expect(klass.new.foo.inspect).to eq("<Hashr {:bar=><Hashr {:baz=>\"baz\"}>}>")
+    end
+
+    example '#to_s' do
+      expect(klass.new.foo.to_s).to eq("{:bar=>{:baz=>\"baz\"}}")
+    end
+  end
 end