A compilation error in demo

[ramtob]

Intended outcome: The demo application will compile and run successfully

Actual outcome: Getting an error message:
An unhandled exception occurred: Script file ./node_modules/socket.io-client/dist/socket.io.js does not exist.

How to reproduce the issue: Run yarn run demo:start

Version

• angular-cesium@0.0.67

[eitanfr]

fixed