change .path files to be loaded from GitHub

2013/birken/.entry.json

@@ -310,7 +310,7 @@
 	    "inventory_order" : 4294967295,
 	    "OK_to_edit" : false,
 	    "display_as" : "text",
-	    "display_via_github" : false,
+	    "display_via_github" : true,
 	    "entry_text" : "directory path from top directory"
 	},
 	{

2013/birken/index.html

@@ -591,7 +591,7 @@ Brothers 2, Nintendo, 1987.</p></li>
 <li><a href="multi3.gif">multi3.gif</a> - stages showing multi-square emitters</li>
 <li><a href="multi4.gif">multi4.gif</a> - stages showing multi-square emitters</li>
 <li><a href="multi5.gif">multi5.gif</a> - stages of multi-square emitters</li>
-<li><a href=".path">.path</a> - directory path from top directory</li>
+<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2013/birken/.path">.path</a> - directory path from top directory</li>
 <li><a href="pen0.gif">pen0.gif</a> - stages of single square rotruding from the bottom</li>
 <li><a href="pen1.gif">pen1.gif</a> - stages of single square rotruding from the bottom</li>
 <li><a href="pen2.gif">pen2.gif</a> - stages of single square rotruding from the bottom</li>