Added methods inside the group class
Issue #58 Adding Skeleton of Photos and Songs
Issue #58 Resolve Conflict
Issue #58 Resolve Conflict
Issue #58 Resolve Conflict 3
Issue #57 Create Photo form and Controller
Merge pull request #89 from yousraHazem/C4_S0_as_a_child/supervisor_provide__i_can_invite_others_to_a_group

Added methods inside the group class
Issue #57 Add Params
Merge pull request #58 from yousraHazem/C3_S0_Skeleton_for_Photos_And_Songs

Creating Photo and Songs skeleton
Merge pull request #57 from yousraHazem/C3_S0_Uploading_photos_form

As I child I should be able to post a picture
Update photo.rb
conv