update version

Author: e7mac

Leanplum-SDK/Classes/Internal/LPConstants.h

@@ -49,7 +49,7 @@
 #define IS_NOOP ((!IS_SUPPORTED_IOS_VERSION) || IS_JAILBROKEN || [LPConstantsState sharedState].isTestMode || [LPConstantsState sharedState].isInPermanentFailureState)
 #define RETURN_IF_NOOP if (IS_NOOP) return
 
-#define LEANPLUM_SDK_VERSION @"2.3.1-beta1"
+#define LEANPLUM_SDK_VERSION @"2.3.1"
 #define LEANPLUM_CLIENT @"ios"
 
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