Update changelog

CHANGELOG.md

@@ -51,6 +51,10 @@ To install or update CocoaPods see this [guide](http://docs.cocoapods.org/guides
   [Samuel Giddins](https://github.com/segiddins)
   [#1489](https://github.com/CocoaPods/CocoaPods/issues/1489)
 
+* Only setup the master specs repo if required
+  [Daniel Tomlinson](https://github.com/DanielTomlinson)
+  [#2562](https://github.com/CocoaPods/CocoaPods/issues/2562)
+
 ##### Bug Fixes
 
 * Do not try to clone spec-repos in `/`.  
@@ -136,11 +140,12 @@ To install or update CocoaPods see this [guide](http://docs.cocoapods.org/guides
 
 * Allow the `Validator` to only use specific sources.
   Allows customizable source for `pod spec lint` and `pod lib lint`,
-  with both defaulting to `master`.  
+  with both defaulting to `master`.
   [Samuel Giddins](https://github.com/segiddins)
   [#2543](https://github.com/CocoaPods/CocoaPods/issues/2543)
   [cocoapods-trunk#28](https://github.com/CocoaPods/cocoapods-trunk/issues/28)
 
+
 * Takes into account the sources specified in `Podfile` running
   `pod outdated`.  
   [Samuel Giddins](https://github.com/segiddins)