Fix for getting outage information with the "from" keyword argument.

'from' is a reserved keyword and may not be used in keyword arguments.
I've proposed a solution for this problem by using 'from_' instead and
translating it to 'from' before checking the kwargs dictionary.
Missed some functions. Fixed Documentation.
Fixed Typos
Fixed various errors with undefined variables and missing imports.
Changed from_ to time_from and to to time_to on check object.
Merge pull request #7 from demophoon/master

Cleaned up codebase and changed "from" keyword argument.