fix: assignment to readonly property to allow running in strict mode (#…

…270)

* Replaced assignment to readonly Function.name with Object.defineProperty, as you can't assign to readonly properties in strict mode.

* added check to make sure the name property is configurable before trying to configure it.

This should allow compatibility with both strict mode and non-standard, pre-ES2015 implementations, such as in node 0.12.x

* Removed extra blank newline.

lib/v35.js

@@ -43,7 +43,10 @@ module.exports = function(name, version, hashfunc) {
     return buf || bytesToUuid(bytes);
   };
 
-  generateUUID.name = name;
+  // only attempt to set the name if's configurable (which it should be on node > 0.12)
+  if (Object.getOwnPropertyDescriptor(generateUUID, 'name').configurable) {
+    Object.defineProperty(generateUUID, 'name', {value: name});
+  }
 
   // Pre-defined namespaces, per Appendix C
   generateUUID.DNS = '6ba7b810-9dad-11d1-80b4-00c04fd430c8';