Add escapePath()

[Richienb]

import {getProperty, escapePath} from 'dot-prop';

const object = {
	foo: {
		bar: ['👸🏻 You found me Mario!'],
	},
	'foo.bar[0]' : '🍄 The princess is in another castle!',
};
const escapedPath = escapePath('foo.bar[0]');

console.log(getProperty(object, escapedPath));
//=> '🍄 The princess is in another castle!'

Fixes #83

[sindresorhus]

Do you plan any more work after this PR or should I release it then?

[Richienb]

Do you plan any more work after this PR or should I release it then?

Last one: #91