More fixes

Author: monkstone

examples/distance_joint/distance_joint.rb

@@ -19,6 +19,7 @@ def settings
 end
 
 def setup
+  sketch_title 'Distance Joint'
   # Initialize box2d physics and create the world
   @box2d = WorldBuilder.build(app: self)
   @system = ParticleSystem.new

examples/mouse_joint/mouse_joint.rb

@@ -5,11 +5,12 @@
 # Basic example of controlling an object with the mouse (by attaching a spring)
 
 require 'pbox2d'
+require 'forwardable'
 require_relative 'box'
 require_relative 'boundary'
 require_relative 'spring'
 require_relative 'dummy_spring'
-require 'forwardable'
+
 
 # A reference to our box2d world
 attr_reader :box2d, :boundaries, :box, :spring