fixing package

Author: vitaly-t

package.json

@@ -1,6 +1,6 @@
 {
   "name": "spex",
-  "version": "4.0.0",
+  "version": "4.0.1",
   "description": "Specialized Promise Extensions",
   "main": "src/index.js",
   "typings": "typescript/spex.d.ts",
@@ -12,7 +12,7 @@
     "lint": "eslint ./src ./test/**/*.spec.js"
   },
   "files": [
-    "lib",
+    "src",
     "typescript"
   ],
   "homepage": "https://github.com/vitaly-t/spex",