Added option to prevent path transformation

[javiergarmon]

It fixes some issues like:

• Issue with watching directory with name including glob characters Issue with watching directory with name including glob characters #300
• chokidar doesn't notice changes under weird path chokidar doesn't notice changes under weird path #336
• Folder with parenthesis in the name can't be watched Folder with parenthesis in the name can't be watched #344

[paulmillr]

Whatsup with those tests?

[javiergarmon]

Are you asking about Travis tests or are you asking to write some tests for this functionality?

[es128]

The tests are failing because of a pre-existing issue in master with unwatch. Trying to find time to work on debugging it soon.

But nonetheless 👎 on merging this change. I agree it will alleviate some pain, but this is the easy way out and I believe it can be solved without adding a new option.

Even if we were to decide to incorporate this, yes it definitely would need new tests to cover the added feature.