Set the deployment target to 10.11

Author: tiennou

GitX.xcodeproj/project.pbxproj

@@ -1680,6 +1680,7 @@
 				INFOPLIST_FILE = Resources/Info.plist;
 				INFOPLIST_OTHER_PREPROCESSOR_FLAGS = "-traditional";
 				INSTALL_PATH = /Applications;
+				MACOSX_DEPLOYMENT_TARGET = 10.11;
 				PRODUCT_BUNDLE_IDENTIFIER = net.phere.GitX;
 				PRODUCT_NAME = GitX;
 				VERSIONING_SYSTEM = "apple-generic";
@@ -1699,6 +1700,7 @@
 				INFOPLIST_FILE = Resources/Info.plist;
 				INFOPLIST_OTHER_PREPROCESSOR_FLAGS = "-traditional";
 				INSTALL_PATH = /Applications;
+				MACOSX_DEPLOYMENT_TARGET = 10.11;
 				PRODUCT_BUNDLE_IDENTIFIER = net.phere.GitX;
 				PRODUCT_NAME = GitX;
 				STRIP_INSTALLED_PRODUCT = YES;