Add default config loading to RAS Machine
Add default config loading to RAS Machine

Closes #292

1. Checks if argument is explicitly given and uses that
2. Checks if default location exists and uses that
3. Fails
johnbachman/indra,sorgerlab/indra,johnbachman/indra,bgyori/indra,bgyori/indra,sorgerlab/indra,pvtodorov/indra,sorgerlab/belpy,sorgerlab/indra,pvtodorov/indra,johnbachman/belpy,johnbachman/belpy,bgyori/indra,johnbachman/indra,johnbachman/belpy,sorgerlab/belpy,pvtodorov/indra,sorgerlab/belpy,pvtodorov/indra