RTIMULib copy should be optional

[teuteuguy]

Copying the RTIMULib to the home folder requires access to the home folder, which in some cases, ie. running as root can become complex.

This should be a setting on load of the lib, to choose whether or not to copy the RTIMULib file or not.

Event, be able to provide path to file directly.

[XECDesign]

In general, you should be guaranteed access to your home directory, if nowhere else. But yes, flexibility wouldn't hurt.

[J-Hurtta]

Indeed. I'm trying to use python-sense-hat on on a limited access case (Home Assistant on Hass.io).

As the RTIMULib is not listed as a dependency, it is not installed on my device and thus I cannot use my sense hat.

[rzr]

or at least requierement should be mentionned somewhere

Hints:
#58 (comment)
https://github.com/rzr/sense-hat-webthing/blob/master/requirements.txt