Piview

This will contain some 'breaking' changes.

* All results will be returned as dictionary with reading type and value
* Recreate the testing methods
* Update online documentation
* Deprecate the PiView_AG edition
* Code contains list of TODO elements - showing improvements / new features

* Minor edits to code.
* CPU speed returns random value if parameter `random=True` used in call, or -1 when parameter `random=False` (or omitted)
* Temperatures return -273.16ºC when no reading given (absolute zero)
* Keeping documentation edits within this version until next minor update to code

* Minor Fixes

* Updated Package release.

Some enhancements to come - such as return all the attached
storage statistics

Added:

- python version (HOST)
- camera supported / detected (HARDWARE)

Added the following:

- ram total and free
- storage total and free for 'all disks' in total
- name to Host, this is a temporary version until further investigation done, use the host
name method in the network section to get host name

To do:

- statistics (total space, free) for each attached storage device