Started documenting the signing/sending flow.
Cleaned up formatting of README.md
Add some description of encoding a sell offer.
Added description of accepting a posted offer
Added the "/wallet/pushtx" route to the nginx config.
Brought this up to date, with new updates from Grazcoin's repo.
Conflicts:
	etc/nginx/sites-available/default
Bring in updates from the master branch.
Replaced the out-of-date /signed endpoint documentation with the actually-used /pushtx endpoint documentation.
Moved all the POST endpoints to the new URL scheme.
Added documentation for the remaining POST endpoints.
Update README.md
Clean up return value for API
Merge routing in nginx
Update documentation for wallet sync