bumped version to 0.5.2

Author: merlos

MapCache.podspec

@@ -8,7 +8,7 @@
 
 Pod::Spec.new do |s|
   s.name             = 'MapCache'
-  s.version          = '0.5.1'
+  s.version          = '0.5.2'
   s.summary          = 'Map caching for iOS. Support offline maps in your app.'
 
 # This description is used to generate tags and improve search results.