Add info file for rj82.72 for testing purposes.
Create instrument submodule and move instrument classes into the folder.
Add __init__.py to instruments module.
Change module name (file name) to lower case letters - only class names begin with upper case letter.
Change import statements to avoid module name vs. class name confusion to enable proper inheritance.
Edit test.py and keck_test.py and successfully construct first instance of Keck_test class!