Some error handling for autogen.sh.
Update linux INSTALL docs.
Merge pull request #21 from randy-waterhouse/master

Some error handling for autogen.sh.
Merge pull request #22 from FellowTraveler/master

Updated Usage Credits so they work in the new GUI.
Merge pull request #23 from FellowTraveler/master

made assetID optional on smart contracts (in template form)