Added "lifespan in seconds" to new market offer.

Signed-off-by: FellowTraveler <F3llowTraveler@gmail.com>
scripts and prefix paths re-work
More API calls for credentials and smart contracts

Signed-off-by: FellowTraveler <F3llowTraveler@gmail.com>
Merge pull request #170 from da2ce7/master

OTPaths: Scripts and Prefix Path fixes
Tweaks for docs/INSTALL-OSX-Homebrew guide.