intro http abstraction

2-http.md

@@ -53,4 +53,13 @@ $woops->register();
 
 throw new \Exception;
 
-```
+```
+
+You should now see a nice error page with the line highlighted where you throw the exception. If not, go back and debug until you get it working. Now would also be a good time for another commit.
+
+### HTTP abstractions
+
+PHP already has a few things built in to make working with HTTP easier. For example there are the [superglobals](http://php.net/manual/en/language.variables.superglobals.php) that contain the request information.
+
+These are good if you just want to get a quick and dirty script runnin. But if you want to write clean, maintanable, [SOLID](http://en.wikipedia.org/wiki/SOLID_%28object-oriented_design%29) code, then you will want a class with a nice object oriented interface that you can use in your application.
+

README.md

@@ -11,4 +11,4 @@ So let's get started right away with the [setup](1-setup.md).
 ### Parts
 
 * [1. Setting up the project](1-setup.md).
-* [2. Http abstraction](2-http.md).
+* [2. HTTP abstraction](2-http.md).