0.6.52

- Option to reload experiments on app foregrounding. [Learn More](http://developers.optimizely.com/ios/help/html/Classes/Optimizely.html#//api/name/shouldReloadExperimentsOnForegrounding).
- Ability to target experiments based on custom tags. [Learn More](http://developers.optimizely.com/ios/#customtags).
- Improved tagging of views in storybord/xib files.