Be able to generate commands that need date ranges.
git clone git@github.com:afaur/revp.git
cd revp
rvm install ruby-2.1.5
rbenv install ruby-2.1.5
rbenv local ruby-2.1.5
bundle install
./revp --help
./revp --start="2012 1 1 0 0 0" --end="2016 4 27 0 0 0" --phrase="in one day"
./revp --start="2016 1 16 0 0 0" --end="2016 1 16 0 0 0" --phrase="in two
seconds"