Got rid of more app-specific demo machines (eg, DONKEY and WIN101); demos like that are more properly located in either the /apps or /disks folders (not /devices)

apps/pcx86/1981/donkey/debugger/README.md

@@ -0,0 +1,28 @@
+---
+layout: page
+title: "DONKEY.BAS (1981) with Debugger"
+permalink: /apps/pcx86/1981/donkey/debugger/
+machines:
+  - type: pcx86
+    id: ibm5150
+    config: /devices/pcx86/machine/5150/cga/64kb/debugger/machine.xml
+    state: /apps/pcx86/1981/donkey/state.json
+    autoMount:
+      A:
+        path: /disks/pcx86/dos/ibm/1.00/PCDOS100.json
+      B:
+        name: None
+---
+
+IBM PC Running DONKEY.BAS (with Debugger)
+-----------------------------------------
+
+{% include machine.html id="ibm5150" %}
+
+The above simulation is configured for a clock speed of 4.77Mhz, with 64Kb of RAM and a CGA display,
+using the original IBM PC Model 5150 ROM BIOS and CGA font ROM.  This configuration also includes a
+predefined state, with PC-DOS 1.0 already booted and DONKEY.BAS ready to run.
+
+And now that PCx86 automatically saves all your changes (subject to the limits of your browser's local
+storage), you can even close the browser in the middle of a game of DONKEY, and the next time you load
+this page, your progress (and the donkey) will be perfectly restored.