Adding cucumber

Added 3 unsuccesfull signup scenarios.
I'm testing the creation a new standup, the way the code works is when you click the new standup button it just creates an empty template labeled with today's date on the same page that you then fill out, in the step definition, a new standup is defined as noticing a standup with today's date. Given of the one standup per day limitation, I think that should be sufficient.