Merge pull request #21 from lukas-reineke/files-in-package-json

NO-TICKET exclude all files except d.ts

Author: rmcauley

package.json

@@ -6,7 +6,7 @@
   "browser": "index.web.js",
   "types": "src/index.d.ts",
   "files": [
-    "/src",
+    "/src/**/*.d.ts",
     "/index.web.js",
     "/index.node.js"
   ],