Create todo.py

Python script to convert text file with the following format into a prioritised todo list.

(0) @Drudgery +Mx Stop procrastinating about CQC submission
(1) @Drudgery Review TB annual report
(2) @Home Light bulbs
@Drudgery +due:2014-05-01 +Revalidation Complete revalidation documentation
@Checklist Monday: FES weekly return, exceedances, TC with Centres
@Plan Submit abstract to TB conference
@SMWork Learn Javascript
@WaitingFor +due:2014-02-31 Response from speakers at epi training event