Merge pull request #39 from stanislaw/master

Make two tree controllers of tester project work with two sets of random annotations of SF and NY respectively (#38)
Add CHANGELOG.md
Changelog for current master
Update podspec to 0.1.3
Fix bug with cluster grid not freed correctly (#41)
Bump kingpin podspec to 0.1.4
Merge pull request #42 from stanislaw/master

Bump kingpin podspec to 0.1.4
Add new podspec (because of recent cocoapods migration to podspec.json)
Fix issue with configureAnnotationForDisplay (#19)
Merge branch 'master' into dev