Barter mechanic fix
Merge remote-tracking branch 'scrawl/tradefix'
fixed AiWander arguments
Issue #694: allow float literals starting with .
Fixed an additional 0 being sent into the AIWander idle parameters vector (Thanks to Chris)
Add link to Development Environment Setup in the readme.

Point people who need to build this from source in the right direction.
Merge remote-tracking branch 'axujen/master'
Fix the frame update not getting called on the first frame
Merge remote-tracking branch 'scrawl/master'