Add basic test for prime_factorization_of
Assertion: add notes for future assertion message feature
Primes: add prime_factorization_of
Primes: Add a prime check to prime_factorization_of
Add test for prime_factorization_of
Add Feature Ideas to readme
Fix test
Refactor variable names
Clone nontrivial_divisors_of method into Naive wrapper class
Add notes about general purpose memoize function
Add note about prob10 optimization
Add note about an unnecessary work bug
Primes Library: Optimize divisor_count_of

Include benchmark for 2 large values.  Benchmark results added to README
for further explanation.
Optimize divisor_count_of
Add solution for problem 12
Merge branch 'master' of github.com:eric-hu/Project-Euler