Can update grnd info. Implemented help menu.
Supports 'exit' to quit the program.
Fixed up a minor home path issue such that it should be OS agnostic
(well, it works on OSX now).
Removed one line to tighten it up a bit.
Merge pull request #1 from dneiss/master

Fixed up a minor home path issue such that it should be OS agnostic
Updated the README.
Handles package dependencies more cleanly.
Prints next pass time in local timezone.
Now shows the set time of the next pass.
Beginning framework for time-adjustment.
Basic time control is implemented.
Adjusted help information
Adjusted comment style.
Cleaned up white space
Removed unnecessary import statements.
Basic support for freezing and unfreezing time
Merged prompt into master
Globalized the program time
Cleaned up code based on pylint recommendations.