Update README.md
Trading form working now.

"Proposed tx does not pay enough coins of the color I want to me 2" still persists and lag the exchanges :(

Signed-off-by: Karel Tuma <karel.tuma@gmail.com>
Merge branch 'master' of github.com:bitcoinx/webcoinx
Display order book bids/asks for particular color.

Signed-off-by: Karel Tuma <karel.tuma@gmail.com>