docs: using constants for basePath

[Guria]

follow up from #15

[saulshanabrook]

@Guria Is this something we should add to the README on this project? I am happy to do it, just wanna make sure I understand where you are coming from.

Would it be like

// statePaths.js
export const userPath = 'someModule.users'

// MyStatelessComponent.js
import {Component} from 'cerebral-view-react'
import {userPath} from '../statePaths'

const MyStatelessComponent = Component((props) => ({
  user: `{userPath}.{props.userID}`
})), (props) => (
  <h1>{props.user}</h1>;
));

[Guria]

@christianalfoni how about add it to "How do I handle section?"

[saulshanabrook]

On this README or on the website?

[Guria]

on website

[Guria]

it's not tied to only react view