Merge pull request #171 from anharrington/master

instance method limbs not class method for Animal class

_sources/Classes/AddingOtherMethodstoourClass.rst

@@ -84,7 +84,7 @@ have one additional parameter as compared to the invocation.
 
 **Check Your Understanding**
 
-1. Create a class called Animal that accepts two numbers as inputs and assigns them respevtively to two instance variables: ``arms`` and ``legs``. Create a class method called ``limbs`` that, when called, returns the total number of limbs the animal has. To the variable name ``spider``, assign an instance of ``Animal`` that has 4 arms and 4 legs. Call the limbs method on the ``spider`` instance and save the result to the variable name ``spidlimbs``. 
+1. Create a class called Animal that accepts two numbers as inputs and assigns them respevtively to two instance variables: ``arms`` and ``legs``. Create an instance method called ``limbs`` that, when called, returns the total number of limbs the animal has. To the variable name ``spider``, assign an instance of ``Animal`` that has 4 arms and 4 legs. Call the limbs method on the ``spider`` instance and save the result to the variable name ``spidlimbs``. 
 
 .. activecode:: ac_chp13_classes_01
    :tags: Classes/ImprovingourConstructor.rst, Classes/AddingOtherMethodstoourClass.rs