Process symlinked shared library as .node

lib/module.js

@@ -467,11 +467,11 @@ Module._extensions['.json'] = function(module, filename) {
 };
 
 
-//Native extension for .node
+//Native extension for .node and OS-specific equivalents
 Module._extensions['.node'] = function(module, filename) {
   process.dlopen(filename, module.exports);
 };
-
+Module._extensions['.dylib'] = Module._extensions['.node'];
 
 // bootstrap main module.
 Module.runMain = function() {