[fix minor] Fix 2 typos in forever service CLI

Author: mmalecki

lib/forever/service/cli.js

@@ -28,9 +28,9 @@ var service = new Service({
 });
 
 app.cmd('install', cli.install = function () {
-  app.service.install(function onInstall(err) {
+  service.install(function onInstall(err) {
     if (err) {
-      forevee.log.error(err);
+      forever.log.error(err);
     }
     else {
       forever.log.info('foreverd installed');