Added xls
Added roo and rubyzip at Gemfile.
Require lib/student.
Student initial version.
Render graphics.
Configure public folder, root and views.
Refactor route.
Extract Klass from student file;
Rename Klass to Report.
Implement all graphics.
require report.
Fatec image.
Home.erb.
fix zip roo problem
use github method to clone scalone/roo
Refactor report and student to parse strings and integers.
Removed old report copy
rename some variables in app.rb