Project Euler - Problem #2
"Each new term in the Fibonacci sequence is generated by adding the previous two terms. By starting with 1 and 2, the first 10 terms will be: 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, ... By considering the terms in the Fibonacci sequence whose values do not exceed four million, find the sum of the even-valued terms."
To get value run ruby run.rb. If you want to test other max values uncomment last line in run.rb file (run_test) and run ruby run.rb again.