Merge pull request #1 from mastercoin-MSC/master

Get the latest from mastercoin-MSC:master
Ignore certain fields when canceling a sell offer
Merge pull request #66 from dacoinminster/master

Fix for issue #64 (ambiguous investments) and issue #67 (underpayment clarification)
Merge pull request #70 from marv-engine/sell_offer_fix

Reviewed. These clarifications were agreed to in email discussions.
Merge pull request #1 from mastercoin-MSC/master

getting update
broken links fixed

20: Sell Coins for Bitcoins (currency trade offer)
https://github.com/mastercoin-MSC/spec#sell-coins-for-bitcoins

should be linked to 
https://github.com/mastercoin-MSC/spec#sell-mastercoins-for-bitcoins

likewise

22: Purchase Coins with Bitcoins (accept currency trade offer)
https://github.com/mastercoin-MSC/spec#purchase-coins-with-bitcoins

should be linked to

https://github.com/mastercoin-MSC/spec#purchase-mastercoins-with-bitcoins
Merge pull request #71 from zynis/master

Fixed 2 Broken Internal Links
Merge pull request #74 from dacoinminster/master

Make explicit that bytes after a packet are ignored, and can have any va...
Merge branch 'master' of https://github.com/mastercoin-MSC/spec