added isStoringLogs; added storeLogs; isSDKDebugLoggingEnabled;
added isStoringLogs; added storeLogs; isSDKDebugLoggingEnabled;

ibm-bluemix-mobile-services/bms-clientsdk-cordova-plugin-core,ibm-bluemix-mobile-services/bms-clientsdk-cordova-plugin-core,ibm-bluemix-mobile-services/bms-clientsdk-cordova-plugin-core