Merge pull request #1 from cristovaocasagrande/master

First implementation of reading openSNP files and converting them to ped and map files (PLINK).

Some cleanup and documentation still needs to be done.
Updated README to include the current functionality
Merge branch 'master' of github.com:chengsoonong/opengwas
new version of the program to parse .map and .ped files from the publics datas of the openSNP