fix(@angular/cli): only install packages once for a new project

Author: clydin

packages/@angular/cli/tasks/init.ts

@@ -94,11 +94,6 @@ export default Task.extend({
           return gitInit.run(commandOptions, rawArgs);
         }
       })
-      .then(function () {
-        if (!commandOptions.dryRun && commandOptions.skipInstall === false) {
-          return npmInstall.run();
-        }
-      })
       .then(function () {
         if (!commandOptions.dryRun && commandOptions.linkCli) {
           return linkCli.run();