'Commit' model generated. with only datafield 'sha', for beginning
added commits_controller with basic 'index' action;
added 'index' view for commits;
added
'/commits' route to show all commits
added git authorisation and basic commits receiving
added db clearing, on opening root
added 'will_paginate' gem;
standart commits retrieving replaced with paginated in commits#index;
added pagination to commits#index view;