Use promises directly.

Avoid async/await so tests can run in node 6.

Author: davidlehn

tests/misc.js

@@ -50,7 +50,7 @@ describe('merge tests', () => {
 
 describe('createNodeMap', () => {
   const doc = {'@id': 'ex:1', 'a:property': [{'@id': 'ex:2'}]};
-  it('should create a flattened node hashmap', async () => {
+  it('should create a flattened node hashmap', () => {
     const expected = {
       "ex:1": {
         "@id": "ex:1",
@@ -59,8 +59,9 @@ describe('createNodeMap', () => {
       "ex:2": {"@id": "ex:2"}
     };
 
-    const map = await jsonld.createNodeMap(doc);
-    assert.deepEqual(map, expected);
+    return jsonld.createNodeMap(doc).then(map => {
+      assert.deepEqual(map, expected);
+    });
   });
 });