Demonstrates the problem that watchEvents are being ignored.

Repro steps:

1. npm install and run browser-sync-repro.js or use npm start.
2. Add a file (like test.js) to the js folder. Notice that browser-sync restarts. This is fine due to watchEvents having 'add' in it.
3. Delete the same file. Notice that browser-sync reloads again even though watchEvents does not have 'unlink'

These are the repro steps for BrowserSync/browser-sync#1367