updated package.json included src

javraindawn · web-flow · commit b6c0c31e1979 · 2017-03-12T10:35:17.000+08:00
```
WARNING in ./~/@biesbjerg/ngx-translate-po-http-loader/dist/index.js
Cannot find source file '../src/index.ts'
```
diff --git a/package.json b/package.json
@@ -11,7 +11,8 @@
     "lint": "tslint --force '*.ts'"
   },
   "files": [
-    "dist/"
+    "dist/",
+    "src/"
   ],
   "repository": {
     "type": "git",
