Errors on Windows

I get a like 3000+ errors when ESlint runs, lint -- --fix reduces it to like 84 errors

Running Windows 10, my other react apps work just fine.

A small portion of the result of running webpack afterwards

```
@ ./js/Search.jsx 16:16-37
@ ./js/App.jsx
@ ./js/ClientApp.jsx
@ multi ./js/ClientApp.jsx ./js/ClientApp.js ./public/bundle.js

ERROR in ./js/Header.jsx

C:\Users\alexw\Source\complete-intro-to-react\js\Header.jsx
8:22 error Parsing error: Unexpected token :

✖ 1 problem (1 error, 0 warnings)

@ ./js/Search.jsx 20:14-33
@ ./js/App.jsx
@ ./js/ClientApp.jsx
@ multi ./js/ClientApp.jsx ./js/ClientApp.js ./public/bundle.js

ERROR in ./js/reducers.js

C:\Users\alexw\Source\complete-intro-to-react\js\reducers.js
6:39 error Parsing error: Unexpected token :

✖ 1 problem (1 error, 0 warnings)

@ ./js/store.js 17:16-37
@ ./js/App.jsx
@ ./js/ClientApp.jsx
@ multi ./js/ClientApp.jsx ./js/ClientApp.js ./public/bundle.js

C:\Users\alexw\Source\complete-intro-to-react>
```