Merge pull request #51 from Microsoft/namespaces

Update mentions of internal/external modules to use namespaces/modules

Author: DanielRosenwasser

pages/Functions.md

@@ -2,7 +2,7 @@
 
 Functions are the fundamental building block of any applications in JavaScript.
 They're how you build up layers of abstraction, mimicking classes, information hiding, and modules.
-In TypeScript, while there are classes and modules, function still play the key role in describing how to `do` things.
+In TypeScript, while there are classes, namespaces, and modules, function still play the key role in describing how to *do* things.
 TypeScript also adds some new capabilities to the standard JavaScript functions to make them easier to work with.
 
 # Functions

pages/Generics.md

@@ -190,7 +190,7 @@ When we use `GenericIdentityFn`, we now will also need to specify the correspond
 Understanding when to put the type parameter directly on the call signature and when to put it on the interface itself will be helpful in describing what aspects of a type are generic.
 
 In addition to generic interfaces, we can also create generic classes.
-Note that it is not possible to create generic enums and modules.
+Note that it is not possible to create generic enums and namespaces.
 
 # Generic Classes