Removed misd/guzzle-bundle and use guzzle/guzzle service
Change README.md increase version to install from RC2 to RC4
Fix version to install at RC3 in README.md
Fix dependance with guzzle #112

Switch from guzzle/http to guzzle/guzzle
Merge branch 'master' into feature/attributeset
Add family prune #104

*Families (attribute sets on magento side) are now deletable