Renamed 'Objects' chapter to 'Classes and Objects'; added class-variables recipes

Author: David Brady

chapters/classes_and_objects/class-variables.textile

@@ -0,0 +1,27 @@
+---
+layout: recipe
+title: Class Variables
+chapter: Classes and Objects
+---
+
+h2. Creating Class Variables
+
+You want to create a class variable.
+
+h2. Solution
+
+Use json notation in the class body; use :: to access it outside:
+
+{% highlight coffeescript %}
+class Zoo
+  MAX_ANIMALS: 50
+
+Zoo::MAX_ZOOKEEPERS = 5
+
+Zoo::MAX_ANIMALS
+# => 50
+{% endhighlight %}
+
+h2. Discussion
+
+Coffeescript will store these values on the class prototype (e.g. Zoo.prototype.MAX_ANIMALS) rather than on individual object instances, which conserves memory and gives a central location to store class-level values.

chapters/objects/cloning.textile renamed to chapters/classes_and_objects/cloning.textile

@@ -1,7 +1,7 @@
 ---
 layout: recipe
 title: Cloning an object (deep copy)
-chapter: Objects
+chapter: Classes and Objects
 ---
 
 h2. Problem

chapters/objects/create-object-literal-if-not-exist.textile renamed to chapters/classes_and_objects/create-object-literal-if-not-exist.textile

@@ -1,7 +1,7 @@
 ---
 layout: recipe
 title: Create an object literal if it does not already exist
-chapter: Objects
+chapter: Classes and Objects
 ---
 
 h2. Problem

chapters/objects/index.textile renamed to chapters/classes_and_objects/index.textile

@@ -1,7 +1,7 @@
 ---
 layout: chapter
-title: Objects
-chapter: Objects
+title: Classes and Objects
+chapter: Classes and Objects
 ---
 
 {% capture url %}/chapters/{{ page.chapter | replace: ' ', '_' | downcase }}{% endcapture %}

chapters/index.textile

@@ -3,7 +3,7 @@ layout: default
 title: Cookbook
 chapters:
 - Syntax
-- Objects
+- Classes and Objects
 - Strings
 - Arrays
 - Dates and Times