Demo app deployment

[mkhorton]

Issue to track deployment of demo/example apps.

This will:

• Deploy to crystaltoolkit.org
• Be hosted using PythonAnywhere (Anaconda)

With the intention to:

• Demo individual components available in Crystal Toolkit
• Host example apps showing integration of multiple Crystal Toolkit components

[Yuziyue]

Hello， I find that "examples/testes/phase_diagram.py" shows like:

Just like #361 and #264 , how to fix it?