test data directory and test for mg-get-metagenome
missing script name for testing

added valid name for script to test
changed KB env variable from KB_TOP_DIR to KB_TOP
bugfix
different path for out path
test if output is json
bugfix - json/object check returns true or false
changed output dir default to current dir. Removed Data:Dumper output
Merge pull request #1 from wilke/master

Tests