hidraw: Grab the evdev device to prevent double input.
hidraw: Fix error on disconnect.
Update README.rst for hidraw
Add udev rules for hidraw

- Allows hidraw devices to be used without root priviledges
- Only adds permissions to DualShock 4 devices by matching idVendor and idProduct.
Merge pull request #11 from Ape/pullrequest/udev-rules-hidraw

Add udev rules for hidraw
Merge pull request #12 from Ape/pullrequest/readme_hidraw_update

Update README.rst for hidraw