Add Handsontable to the registry and package-overrides.

package-overrides/github/handsontable/handsontable@0.24.1.json

@@ -0,0 +1,14 @@
+{
+  "main": "dist/handsontable.full.min",
+  "dependencies": {
+    "css": "0.1.0"
+  },
+  "shim": {
+    "dist/handsontable.full.min": {
+      "exports": "Handsontable",
+      "deps": [
+        "handsontable/handsontable/dist/handsontable.full.min.css!"
+      ]
+    }
+  }
+}

registry.json

@@ -257,6 +257,7 @@
   "handlebars.js": "github:components/handlebars.js",
   "handlebars-group-by": "npm:handlebars-group-by",
   "handlebars-layouts": "npm:handlebars-layouts",
+  "handsontable": "github:handsontable/handsontable",
   "happy": "github:henrikjoreteg/Happy.js",
   "hbs": "github:davis/plugin-hbs",
   "headroom.js": "github:WickyNilliams/headroom.js",