fix(bithound): gulp-esdoc bump won't make it better

Author: 0-vortex

.bithoundrc

@@ -18,7 +18,8 @@
     },
     "dependencies": {
         "mute": [
-            "gulp-spawn-mocha"
+            "gulp-spawn-mocha",
+            "gulp-esdoc"
         ]
     }
 }