Removed spurious whitespace.
Updated way char dev is registered

1. Updates the system calls used to register a character device to what
appears to be the newer version.

2. Automatically registers /dev/radio so setup.sh is no longer needed.

Fixes issue #9.
Removing unnecessary script
Updated readme to reflect setup.sh isn't needed.
Merge pull request #14 from bradjc/auto_reg

Character Device Now Automatically Creates Device File