Publish Vulpes Preview 15 sources for desktop, Android and Tundra

Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.

gaia/distros/spark/apps/directory/manifest.webapp

@@ -0,0 +1,47 @@
+{
+  "name": "Hackerplace",
+  "description": "Directory Listing for Hackable Apps",
+  "type": "certified",
+  "launch_path": "/index.html",
+  "permissions": {
+    "webapps-manage": {
+      "description": "For installing apps"
+    },
+    "device-storage:apps": {
+      "description": "For installing apps",
+      "access": "readwrite"
+    },
+    "feature-detection": {
+      "description": "For dev mode perf"
+    },
+    "settings": {
+      "description": "For reading/writing achievements settings",
+      "access": "readwrite"
+    },
+    "desktop-notification": {
+      "description": "For sending achievements notifications to Gaia::System"
+    },
+    "systemXHR": {
+      "description": "For requesting the remote app list"
+    },
+    "moz-extremely-unstable-and-will-change-webcomponents": {
+      "description": "For web components"
+    }
+  },
+  "icons": {
+    "84": "/img/icons/directory_84.png",
+    "126": "/img/icons/directory_126.png",
+    "142": "/img/icons/directory_142.png",
+    "189": "/img/icons/directory_189.png"
+  },
+  "activities": {
+    "install": {
+      "filters": {
+        "type": ["apps", "addons"]
+       },
+      "disposition": "inline",
+      "returnValue": true,
+      "href": "/index.html"
+    }
+  }
+}