set up new relationships between e_question, e_answer, rehearsal and exercise models
created basic rehearsal scaffold
added more to model relationships - including making exercise have_many rehearsals. Also added Exercise.last to New rehearsal controller action, to demonstrate that I can pull in the questions via exercise, onto a rehearsal page.
successfully passing exercise ID params through to rehearsal URL rehearsals/new?exercise=1
setting up proper variables in rehearsal controller new action to access questions and answers
changed rehearsals controller new action to a .each build off of questions for answers
relations and associations set up for answers to create in Rehearsal new. It's broken, but it should work.
correctly set up fields_for in rehearsal form, for answers to questions. The form builds and generates. It does not yet successfully save answers, or save rehearsals with an exercise ID.
not sure what all these saves are - might need to do undo. has a migration pending among other things
updated rehearsals to enable e_answers to save with e_questions ID and rehearsals to save with exercise_id. Solution came from Adam who showed me how to submit hidden field using .each_with_index method to feed the correct rehearsal into each loop
Merge pull request #7 from Henryvw/add_rehearsals

Add rehearsals