remove ARC reference from the readme
remove ARC reference from the readme

cezheng/XcodeEditor,JoelGerboreLaser/XcodeEditor,appsquickly/XcodeEditor,khanhtbh/XcodeEditor,khanhtbh/XcodeEditor,cezheng/XcodeEditor,appsquickly/XcodeEditor,appsquickly/XcodeEditor,andyvand/XcodeEditor,iosdevzone/XcodeEditor,service2media/XcodeEditor,JoelGerboreLaser/XcodeEditor