Formatting change to README.md
Change TestHostTiny to exercise system testing

TestHostTiny now contains interesting things to introspect matching
the API spec, but doesn't implement functionality. It's intended to
provide a useful parsable data source for the python host code.
Be more tolerant of initialisation delays
Parsing support for basic functions

Handle four cases:

   * No args
   * 1 arg, no result
   * No arg, result
   * 1 arg, result
Shift introspection & control into DeviceProxy
Added ability to get and set device attributes

This happens transparently through the device proxy
Start of function proxies for iotoy devices