use timestamp data type for timestamps. fix #29
set oracle's date and timestamp format to YYYY-MM-DD HH:MI:SSXFF AM TZR
revert default date format for DATE and TIMESTAMP to YYYY-MM-DD HH24:MI:SS
set default charset to AL32UTF
Merge pull request #30 from forgandenny/master

ORA-01795 workaround
fix some spacing and use query instead of q for readability
added badges