Examples: Apple/iOS: lowered xcode project deployment target from 10.7 to 10.11 (#598, #575)

examples/apple_example/imguiex.xcodeproj/project.pbxproj

@@ -366,7 +366,7 @@
 				INFOPLIST_FILE = "imguiex-osx/Info.plist";
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
 				LIBRARY_SEARCH_PATHS = /usr/local/lib;
-				MACOSX_DEPLOYMENT_TARGET = 10.11;
+				MACOSX_DEPLOYMENT_TARGET = 10.7;
 				PRODUCT_BUNDLE_IDENTIFIER = "org.imgui.example.imguiex.imguiex-osx";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = macosx;
@@ -389,7 +389,7 @@
 				INFOPLIST_FILE = "imguiex-osx/Info.plist";
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks";
 				LIBRARY_SEARCH_PATHS = /usr/local/lib;
-				MACOSX_DEPLOYMENT_TARGET = 10.11;
+				MACOSX_DEPLOYMENT_TARGET = 10.7;
 				PRODUCT_BUNDLE_IDENTIFIER = "org.imgui.example.imguiex.imguiex-osx";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = macosx;