Changes based on code review

- Style changes for not requiring "else" in handlebar helpers
- Changed build to async

lib/cmds/scaffolding.js

@@ -34,8 +34,7 @@ class Scaffolding {
         }
 
         const contract = contractConfiguration.contracts[contractName];
-        const result = build(contract);
+        build(contract);
-        this.embark.logger.info(result);
     }
 }