Add npm modules needed for testing

build/monaco/package.json

@@ -15,6 +15,7 @@
   "devDependencies": {
     "debounce": "^1.0.0",
     "event-stream": "^3.1.7",
+    "glob": "^5.0.13",
     "gulp": "^3.8.9",
     "gulp-bom": "^1.0.0",
     "gulp-concat": "^2.6.0",
@@ -28,10 +29,16 @@
     "gulp-util": "^3.0.6",
     "gulp-watch": "^4.3.9",
     "is": "^3.1.0",
+    "istanbul": "^0.3.17",
+    "jsdom-no-contextify": "^3.1.0",
     "lazy.js": "^0.4.2",
+    "minimatch": "^2.0.10",
+    "mocha": "^2.2.5",
     "object-assign": "^4.0.1",
     "pump": "^1.0.1",
+    "remap-istanbul": "^0.6.4",
     "rimraf": "^2.2.8",
+    "sinon": "^1.17.2",
     "source-map": "^0.4.4",
     "typescript": "^2.0.3",
     "underscore": "^1.8.2",