Added OTParty::GetAgentByIndex

Signed-off-by: FellowTraveler <F3llowTraveler@gmail.com>
Merge pull request #171 from randy-waterhouse/master

OSX-Homebrew guide tweaks
Added missing funcs reported by randy-waterhouse

Signed-off-by: FellowTraveler <F3llowTraveler@gmail.com>
Merge branch 'credentials'
windows fixes
spacing.
Merge pull request #172 from da2ce7/master

More Linker Error Fixes
Autobuild locally from .protos as a static, private convenience lib.