Append python-bitcoinrpc to search path
Print "[classname] successful/failed" after run
Add option --omitstdout to hide or show standard output explicitly
Provide default values in help text
Meta DEx testplan: invalid transactions

Tests passed with Master Core 94b65c2d55eebb3663ae129552b94176d16967fa.

Results:
https://gist.githubusercontent.com/dexX7/96b0e2de46f7abec61f0/raw/bc8c53feb0d399ea4d22b1be80f4fa76aca65cee/20141116-InvalidMetaDexTransactionsTest