Updated CHANGELOG.md to move 'Add new entries' line per @lattner request (#5437)

Author: erica

CHANGELOG.md

@@ -35,6 +35,8 @@ Swift 3.1
   satisfying a predicate.  `drop(while:)` requests the remaining 
   subsequence after dropping the longest subsequence satisfying a
   predicate.
+  
+**Add new entries to the top of this file, not here!**
 
 Swift 3.0
 ---------
@@ -719,8 +721,6 @@ public func project(function f: FunctionType) -> (p0: CGPoint, p1: CGPoint) -> (
     person.valueForKeyPath(#keyPath(Person.bestFriend.lastName))
     ```
 
-**Add new entries to the top of this file, not here!**
-
 Swift 2.2
 ---------