Removed additional logging for divisors_count method
Solutions for problems 1-5 reformatted in a test_case style.
Solutions for problems 6-8 reformatted in a test_case style.
Find_sum method moved inside a TestCase class.
Global method moved inside a class.
Solutions for problems 9-11 reformatted in a test_case style.
For problem 11 all methods rewritten as Matrix class methods.
Added .rvmrc and Gemfile
Fixed Gemfile name. Bundle updated
Greatly improved speed for problem 12 solution. Achieved by rewriting prime_divisors function.
Problem 13 solution reformatted in a test_case style.
Problem 14 solution reformatted in a test_case style. Also refactored a little.
Problems 15 and 16 refactored into test_case style. Sum_of_digits method moved from solution file to Fixnum and Bignum class extenstions.
Solutions for problems 17,19 and 20 refactored into test_case style.