Initial addition of example files

bugs.rb

+class Person
+  attr_reader :name, :email
+
+  def initialize(name, email)
+    @name  = name
+    @email = email
+  end
+
+  ## TODO: Fix the misspelled method name below.
+  def frist_name
+    'Jane'
+  end
+
+  # Duplicate attr_readers.
+  # TODO: Remove these comments and the 2 methods below.
+  def name
+    @name
+  end
+
+  def email
+    @email
+  end
+end

conflicts.rb

+class HelloWorld
+  def initialize
+    output_lines
+  end
+
+  def output_lines
+    puts 'Line1'
+    puts 'Line2'
+    puts 'Line3'
+  end
+end

edit_this_file.rb

+class HelloWorld
+  def initialize(name)
+    @name = name.capitalize
+  end
+
+  def say_hi
+    puts "Hello #{@name}!"
+  end
+
+  # TODO: Remove this comment and the method below.
+  def say_bye
+    puts "Good-bye #{@name}!"
+  end
+end