thermostat version 1.2.0 has been released!

Thermostat.rb is an attempt to build an easy to use ruby api around
the web services provided by the Proliphix line of network
thermostats. Their API is documented at
http://www.proliphix.com/Documentation.aspx.

The code is tested on the NT20e unit, which is what I own (the NT10e
is the same hardware, just can't handle remote sensors). It should
react that same across all their network accessible units.

Changes:

### 1.2.0 2011-01-16
* fix rakefile so readme is correct
* added support for aux heat/aux heat offset/system time (Mark Flocco)