Small refactor
Merge pull request #19 from joerivandervelde/master

Plink utils migration
Readded a lot of tests
Merge branch 'master' of https://github.com/molgenis/molgenis-genotype-reader
Restoring some test and small improvements
Merge pull request #20 from PatrickDeelen/master

Genetic variant plus small improvements
Working on tests for binary plink format reader