Add findUp.exists() and findUp.sync.exists()

[TiagoDanin]

Closes #37

• Documentation
• TypeScript Definition
• Utility Methods

[TiagoDanin]

index.d.ts

declare const findUp: {
	// ... //
	sync.exists(path: string): boolean; //This does not create a nested function (?)
	// ... //
}

[TiagoDanin]

@coreyfarrell I believe this is a hard link [Source]

find-up/test.js

Line 40 in da1b331

absolute.fileLink = path.join(absolute.fixtureDirectory, name.fileLink);

@sindresorhus create link.js with ln -s fixture/baz.js fixture/link.js and run pathExists('fixture/link.js') // false, is that right ?

[coreyfarrell]

@TiagoDanin it might be a hard link in Windows. The symbolic link tests need to be skipped under Windows (see other tests which try to match the links).

[sindresorhus]

Because of #42, we no longer need the isFile/isDirectory methods. We only need the "exists" methods.

[sindresorhus]

@coreyfarrell Looks good to you?

[coreyfarrell]

@sindresorhus the code looks good to me. I made a couple comments about the docs, up to you if you want those minor tweaks made.