Add '.xcodesamplecode.plist' file to achieve proper markdown rendering within Xcode, e.g. of README

Author: Sajjon

Diff for: .xcodesamplecode.plist

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<array/>
+</plist>