Unfix esdoc version

Author: pontusmelke

package.json

@@ -20,7 +20,7 @@
     "babel": "^5.8.23",
     "babelify": "^6.3.0",
     "browserify": "^11.0.0",
-    "esdoc": "0.4.6",
+    "esdoc": "^0.4.0",
     "esdoc-importpath-plugin": "0.0.1",
     "glob": "^5.0.14",
     "gulp": "^3.9.1",