Seconds Added!

• Various convention and code style changes to better conform to pep 8
• Added two additional accessible properties for documents: readtime_with_seconds and readtime_string_with_seconds
• Slightly increased testing coverage

Style Changes & Pull Requests

• Fixed style issues in source files
• Added pull requests #8, #7, #6, & #5

v0.1.2

• PR #1: Added light documentation in the form of a README.
• PR #2: Added a new attribute called readtime_minutes that will let users just display the amount of minutes instead of minutes AND seconds.