Bump version to 1.6.0 (#108)

Author: karbassi

Timer.xcodeproj/project.pbxproj

@@ -309,7 +309,7 @@
 				INFOPLIST_FILE = Timer/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
 				MACOSX_DEPLOYMENT_TARGET = 10.11;
-				MARKETING_VERSION = 1.5.5;
+				MARKETING_VERSION = 1.6.0;
 				PRODUCT_BUNDLE_IDENTIFIER = com.michaelvillar.Timer;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE = "";
@@ -327,7 +327,7 @@
 				INFOPLIST_FILE = Timer/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
 				MACOSX_DEPLOYMENT_TARGET = 10.11;
-				MARKETING_VERSION = 1.5.5;
+				MARKETING_VERSION = 1.6.0;
 				PRODUCT_BUNDLE_IDENTIFIER = com.michaelvillar.Timer;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE = "";