Added content to README
Added directory
Added student count
Added comments to README.md
Student count as a variable
Introduced array and iteration
Using methods
Using hashes
Adding user input
using print instead of puts
Using each_with_index
Only students names starting with 'a'
Only names shorter than 12
Rewriting the each method using While
Added additional information
Centered output
User input for cohort
Students grouped by cohort
Correct student form
Corrected exercice code