Ubuntu install - fixes 86

Fixes #86.

You can actually test the shell script by switching `0.1.0` to `0.0.1`.
Ah yes, quite so.  I wonder if this will confuse other people (who are used to always activating the environment they intend to use).

Perhaps it's worth replacing the `PATH` setup below with activation of the virtualenv.  It involves less shell junk and probably is more in line with the average python user's expectations (although perhaps not with the average non-python user's expectations).