Tooltip with delayShow is not disappearing

[caesarsol]

Hello,
the tooltip is not disappearing if the mouse is off the target when the delayShow triggers.
(#158 fixed only the console error, but not the unintended behavior)

Steps to reproduce:

1. mouseOver on a target element with a delayShow > 0
2. mouseOut when the tooltip has not yet appeared
3. after the delayShow the tooltip appears and remains visible since the mouse is not on the target element.

[caesarsol]

After further investigation, it appears that a workaround to use delayShow is setting a delayHide={1}, because this causes a reset of the Show timeout on mouseLeave.

https://github.com/wwayne/react-tooltip/blob/master/src/index.js#L285

Moving this.clearTimer() outside the if could fix the issue @wwayne?

[wwayne]

Thanks for pointing out the bug, this should be fixed in 3.1.3