Rename script to ‘olpc-journal-processor’

This makes it a bit more consistent with other programs on the system.
Move sample data and output to a ‘samples’ directory
Move CSV screenshot to a ‘docs’ directory

Other documentation can be added here in future.
Add distutils and RPM support

This allows the project to be packaged by running:
 • ./setup.py sdist
 • ./setup.py bdist
 • ./setup.py bdist_rpm