Use SMALLINT instead of TINYINT(1)

Having the datatype TINYINT(1) makes the script incompatible with postgresql. Using SMALLINT instead, and the script works with both mysql and postgresql.
Merge pull request #38 from gartner/patch-2

Use SMALLINT instead of TINYINT(1)
[#38] Also update README
Merge branch 'hotfix/38'

Close #38