added script to handle experiment scheduling

added script to handle experiment scheduling. The script adds or
removes files from each clients data or experiments directory
and gives the option to adjust the frequency that the experiment is
run on with the new scheduler.info json blob that contains info
about how often each experiment should be run
added command line tool to schedule exps

added command line tool that offers the ability to modify the
experiments and data on a country specific basis. Also enables
running experiments on a frequency other than hourly with
functionality that I am about to add to the server itself
bug fix- ensure that we create server inputs dir
bug fixes, typos, and modified to do seconds

updated the scheduler for pep compliance and modified it to work
in terms of minutes, not seconds
bug fix- ensure that we get correct num clients

ensure that we get the correct number of clients by breaking when
necessary
Merge pull request #38 from ben-jones/add_scheduler

Add scheduler