remove --use-mirror in travis build

project maintenance - added versions, authors.txt, changelog.

fixes #29 - Added option to allow insecure HTTPS

fixes #16 - added --ignore-bad-tel-urls option

fixed missing_content being none

Added start urls from file option. refs #13

Merge branch 'contentcheck'

improved README. refs #10 #12

Added more tests and fixed regex matching. refs #10 #12

fixed start url generation. refs #10 #12

Added reporting and fixed some bugs

pushed bs4 up one level to please IDEs like pydev and pycharm.

Validation of content presence and aabsence. refs #10 #12

Initial work on content check. refs #10 #12

Merge branch 'multimode'