Update CHANGELOG.md

Author: eliperkins

CHANGELOG.md

@@ -6,7 +6,9 @@
 * Add buildkite support to coveralls   
   [David Hardiman](https://github.com/dhardiman)
   [#98](https://github.com/venmo/slather/pull/98)
-  
+* Update to xcodeproj 0.28.0 to avoid collisions with Cocoapods 0.39.0   
+  [Julian Krumow](https://github.com/tarbrain)   
+  [#106](https://github.com/venmo/slather/pull/106)/[#109](https://github.com/venmo/slather/pull/109)
 
 ## v1.8.1
 * Fixed dependency conflict with CocoaPods v0.38