Improved formatting

Author: nettlep

README.md

@@ -3,15 +3,15 @@ learn-swift
 
 Learn Apple's Swift programming language interactively through these playgrounds.
 
-#Target Audience
+###Target Audience
 
   Programmers familiar with C++ and/or Objective-C.
 
-#What you'll need
+###What you'll need
 
   XCode 6 or above (and probably a Mac to run it on.)
 
-#Purpose & Goal
+###Purpose & Goal
 
   More than a primer, these playgrounds are intended to get programmers up to
   speed on Swift as fast as possible so they can begin using Swift productively.
@@ -23,7 +23,7 @@ Learn Apple's Swift programming language interactively through these playgrounds
   along the way. Play the 'what-if' game. These are live playgrounds which offer
   near-realtime feedback of edits.
 
-#Source of Content
+###Source of Content
 
   I created these while working my way through the "Laugnage Guide" section of
   Apple's book, "The Swift Programming Language". I feel the information from