Bump watchos deployment target to 3.0

Lib/Configurations/Base.xcconfig

@@ -42,7 +42,7 @@ CODE_SIGN_IDENTITY = ;
 DEVELOPMENT_TEAM = ;
 
 IPHONEOS_DEPLOYMENT_TARGET = 8.0;
-WATCHOS_DEPLOYMENT_TARGET = 2.0;
+WATCHOS_DEPLOYMENT_TARGET = 3.0;
 TVOS_DEPLOYMENT_TARGET = 9.0;
 MACOSX_DEPLOYMENT_TARGET = 10.9;