Add missing whitespace caught by tslint update (TypeStrong#636)

Closes TypeStrong#631

Author: aciccarello

src/test/renderer.ts

@@ -50,7 +50,7 @@ describe('Renderer', function() {
         FS.removeSync(out);
     });
 
-    after(function(){
+    after(function() {
         FS.removeSync(out);
     });