fix: remove unnecessary comma (#472)

This excessive comma provokes some strange behavior on nodejs 6 and the file cannot be `require`d.

Author: Mitko-Kerezov

Diff for: lib/utils.js

@@ -19,7 +19,7 @@ function buildEnvData($projectData, platform, env) {
     const appResourcesPath = getAppResourcesPathFromProjectData($projectData);
     Object.assign(envData,
         appPath && { appPath },
-        appResourcesPath && { appResourcesPath },
+        appResourcesPath && { appResourcesPath }
     );
 
     return envData;