fix(all.js): do not set properties name to function

fixed #1

Author: dead-horse

all.js

@@ -30,7 +30,7 @@ module.exports = function (source, destination, methods) {
 
   methods.forEach(function (name) {
     // promisify only if it's a function
-    if (typeof source[name] === 'function') destination[name] = promisify(name, source[name])
+    if (typeof source[name] === 'function') destination[name] = promisify(source[name])
   })
 
   // proxy the rest

test/all.test.js

@@ -46,4 +46,13 @@ describe('callback-and-promise/all', function () {
       assert(stat.size, fs.statSync(__filename).size)
     })
   })
+
+  it('promisifyAll with reserved words', function () {
+    var module = {
+      delete: function () {}
+    }
+    module = thenify(module)
+    assert(typeof module.delete.name, 'function')
+    assert(module.delete.name, 'anonymous')
+  })
 })