Add separate file for first solution
Have function run 10.times to gain better average for benchmarking
Change approach for finding 3 closest IDs

Have sorting be done while iterating through the CSV file
Fix calculation error in #closest_three

An instance variable used as a flag for whether the current line's
distance was smaller or larger than the elements within @closest
will cause an error

Remove use of instance variable for the flag.
Change each loop to be one line in #closest_three
Merge pull request #2 from trekkie4life/parse

Parse