Missing ionic.project file

I just updated nodejs ionic and cordova. Create new ionic project as before:

ionic start myApp blank 

In terminal, go to myApp directory, and input:

ionic state

I got message:

You cannot run any state commands on a project that is not an Ionic
project. Try adding an ionic.project file or running ionic start to
get an application to save or restore (CLI v1.7.10)

My system information:

• Cordova CLI: 5.4.0
• Ionic Version: 1.1.1
• Ionic CLI Version: 1.7.10
• Ionic App Lib Version: 0.6.5
• ios-deploy version: 1.8.3
• ios-sim version: 5.0.4
• OS: Mac OS X El Capitan
• Node Version: v5.1.0
• Xcode version: Xcode 7.1.1 Build version 7B1005

Question: Where ionic.project file, I don't remember there was this file in project before. How to add ionic.project file?

How do I find this problem? Because I check out source from git, I try to use ionic state restore command to restore application for building. But I got same message, missing ioinc.project. So I create a new ionic project to find reason, but I'm still confused.

If use

ionic start

You will got

Invalid command (CLI v1.7.10)

Of course, there is not directory argument for this command. If you give directory as ./, this command only create and overwrite all project file.

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