include a class-level reference to the environment dictionary
initial interpolation support
remove assertIs call - fails on python<2.7
Merge branch 'class-level-environ' of github.com:averagehuman/django-environ into interpolating-reader
basic interpolation test
resolve_files test
bad input test
test cases
tests
code comments
refactor read_env method internally
include test properties files
fix relative imports
fix test import issues
add path glob iterator
pretty print environment support
support file-like object passed to read method
test pretty print obscures sensitive keys
make classmethods instance methods and refactor
moved test data files