Move the api client initialisation into a method
Make the organisation importer log

Make the organisation importer be noisy about what
it's doing when it's importing organisations.

In the development environment, the logger will
write to STDOUT. 

In production, this will write to the file
log/organisation_import.log, which we can consume
in logstream.
Add a section to the README on updating organisations
Fix the govuk_setenv app name in schedule.rb

When calling govuk_setenv, we have to use the name
of the host rather than the name of the repo.
Log to /dev/null in the test environment

This was making the test output rather noisy, so
let's throw away the logs in the test environment
Log organisation importer as JSON in production

Log in a Logstasher-friendly JSON format in the
production environment.

Change the logfile name to end in .json.log to
reflect this change.
Merge pull request #21 from alphagov/organisation-import-logging

Log the activity of the organisation importer