Fixed error in "buy" example and formatting

1. Buy BBBC for BTC - fixed error in command option
2. Fixed some text formatting in key places.
no longer need --force on testnet without Insight
do not match mempool offers (which don’t match each other)
Merge pull request #146 from JahPowerBit/develop

fix block_index (in messages, credits, ..)  when rematch
Merge pull request #134 from rippler/patch-1

Fixed error in "buy" example and formatting
Merge branch 'develop' of https://github.com/CounterpartyXCP/counterpartyd into develop
Merge pull request #149 from JahPowerBit/develop

fix rps_matches expiration + improve expiration tests (also test if expiration occurs in the correct block)
version bump
new TODO
Merge pull request #150 from JahPowerBit/develop

fix rps parsing
Merge branch 'develop' of https://github.com/CounterpartyXCP/counterpartyd into develop
typo
publish+
typo in fee calculation
forgot to add publish.py
bump fee back to old value
comment about fee
updated API docs
another API doc tweak
more doc updates for clarity