font and borderWidth options

[gali8]

Two new options in the MDCSwipeToChooseViewOptions class: borderWidth (pass nil to default width) font (pass nil to default font)

for Liked and Nope options.

[vikmeup]

@gali8 please discard project.pbxproj from your pull request. I will merge after that.

[confile]

+1 @modocache it would be great if you could merge this request.

[alezoffoli]

+1 looking forward to this request