[CHANGELOG] Add entry for #177

Author: mrackwitz

CHANGELOG.md

@@ -4,6 +4,15 @@
 
 ##### Enhancements
 
+* The linter will now ensure that subspecs' names do not contain whitespace.  
+  [Marius Rackwitz](https://github.com/mrackwitz)
+  [Joshua Kalpin](https://github.com/Kapin)
+  [Samuel Giddins](https://github.com/segiddins)
+  [#177](https://github.com/CocoaPods/Core/issues/177)
+  [#178](https://github.com/CocoaPods/Core/pull/178)
+  [#202](https://github.com/CocoaPods/Core/pull/202)
+  [#233](https://github.com/CocoaPods/Core/pull/233)
+
 * The linter fails now if root attributes occur on subspec level.  
   [Marius Rackwitz](https://github.com/mrackwitz)
   [#233](https://github.com/CocoaPods/Core/pull/233)