Fix tests using new mocha-webpack

package.json

@@ -4,8 +4,7 @@
   "description": "Generate .docx documents with JavaScript (formerly Office-Clippy)",
   "main": "build/index.js",
   "scripts": {
-    "pretest": "rimraf ./build-tests && tsc -p ./test-tsconfig.json",
-    "test": "mocha ./build-tests --recursive",
+    "test": "mocha-webpack \"src/**/*.ts\"",
     "prepublishOnly": "npm run build",
     "lint": "tslint --project .",
     "build": "npm run webpack",
@@ -58,6 +57,7 @@
     "awesome-typescript-loader": "^3.4.1",
     "chai": "^3.5.0",
     "mocha": "^3.2.0",
+    "mocha-webpack": "^1.0.1",
     "prompt": "^1.0.0",
     "rimraf": "^2.5.2",
     "shelljs": "^0.7.7",