Merge pull request #8 from chrismeats/master

Updated validation and added from Updated to list orders

fix: upload product && arrayToXml convert UTF-8 Encoding

Merge branch 'master' of github.com:forecho/amazon-mws

Merge pull request #2 from stefnats/master

New validateCredentials Message

fix: guzzle Unknown SSL protocol error in connection

fix: private to protected

change request function protected

fix post product

update

Bugfix $FulfillmentChannels