[Test]: only use one test runner for results, even if multiple stream…

…s are created

Fixes #105.

test/create_multiple_streams.js

@@ -0,0 +1,31 @@
+var tape = require('../');
+
+tape.test('createMultipleStreams', function(tt) {
+    tt.plan(2);
+
+    var th = tape.createHarness();
+    th.createStream()
+    th.createStream()
+
+    var testOneComplete = false;
+
+    th('test one', function (tht) {
+        tht.plan(1);
+        setTimeout( function() {
+            tht.pass();
+            testOneComplete = true;
+        }, 100);
+    });
+
+    th('test two', function (tht) {
+        tht.ok(testOneComplete, 'test 1 completed before test 2');
+        tht.end();
+    });
+
+    th.onFinish(function() {
+        tt.equal(th._results.count, 2, "harness test ran");
+        tt.equal(th._results.fail,  0, "harness test didn't fail");
+    });
+});
+
+