DOC: cookbook examples
TST: add test for DataReader class
TST: add read_google test
TST: use builtin equality testing
CLN: use a temporary zipfile
BUG: make the pause nonzero but short
CLN: give everything that needs it a closing context manager
CLN: clean up the testing suite
BUG: do not dropna unconditionally
TST/BUG: print out month and year because they are making lxml fail
CLN: remove unused import
CLN: use yahoo test (replace with google) for google testing