v.1.1.0 beta 1

* Fixed a bug that prevented Handoff to be enabled in the System
Preferences, even after a successful patch
([#21](https://github.com/dokterdok/Continuity-Activation-Tool/issues/21
),
[#22](https://github.com/dokterdok/Continuity-Activation-Tool/issues/22)
,
[#31](https://github.com/dokterdok/Continuity-Activation-Tool/issues/31)
)
* Added a backup step for freshly patched drivers, potentially useful
if a future OS X update disables the patching methods
([#16](https://github.com/dokterdok/Continuity-Activation-Tool/issues/16
))
* Added a prompt in case existing backups are found, asking whether to
overwrite the files or skip. Previous behaviour was to silently
overwrite.
* Removed the 13" MacBook Pro 2010 from the compatibility list
([#28](https://github.com/dokterdok/Continuity-Activation-Tool/issues/28
), pull
[#29](https://github.com/dokterdok/Continuity-Activation-Tool/pull/29))
* Minor optimisations