Added a .gitignore main

Making sure all keys are saved as strings instead of ints so we don't try to pass a number in a string when it was saved as an integer

Added initial travis.yml file for CI testing

corrected tests to set default options

fixed incorrect use line

removed oid switching, unsafe the way I was doing it and other tested ways were slow

updated documentation

removed no longer necessary _collection

addition of 'safe' and 'use_oid' flags

initial files