added pledge model
associations and migration
added factory girl model for pledge
filled in pledge factory girl
added test for pledge model
modified test and passing some of them with validations
green
added pledge flows test
added test for pledge flows
added routes for pledges
added pledges controller
added projects argument to pass id testblashablashblash
personalised test
fixed a test
progress
renamed folder
added form for pledge
require strong params, we are green