Support of custom scanner config in xml format.
Should be the best option while
https://issues.apache.org/jira/browse/HBASE-9343 is not resolved

Possible scanner attributes can be found on
http://hbase.apache.org/devapidocs/org/apache/hadoop/hbase/rest/model/ScannerModel.html
Mistype fix
Fixing support for python 3
https://github.com/ziogas/starbase/commit/261f57bfbfe7df0ea7b34d82cc84a68fbf70e950#commitcomment-4365750
merge