Add stats implimentation and tests
Inline stddev and mean, add how to use comments so I can remember later
Add stat sample to string_algo_test. Yay evidence!
Add file_stats to sample a file of numbers

Assumes one number per line. Treats whole
file as one sample.
Add ugly version of header version -> file_stats
Break up main() into functions for readabilty
Merge pull request #4 from bmoar/stats

Stats