Added ability to publish Node.js module.

src/nodejs/unit-http/binding_pub.gyp

@@ -2,6 +2,6 @@
     'targets': [{
         'target_name': "unit-http",
         'sources': ["unit.cpp", "addon.cpp"],
-        'libraries': ["unit"]
+        'libraries': ["-lunit"]
     }]
 }