Iss6/nearest neighbour

Here is a first naive implementation of a nearest neighbor algorithm. It works on formatted data you can download here [1]. For now it compares 2013 monthly values with the years from 1900 to 2013. The output is the list of the years and their euclidean distance to 2013. 

[1] http://narsaq.fa-s.ntnu.no/share/bigdata/data_large.txt

(neighbor was spelled wrong in the branch and files....  will be fixed later)