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added a configureable hostname, port and scheme keyword
Spelling
Documentation updates
Add option to make VHM-methods optional (to allow use of hostname=localhost:8080/Plone in development)
Fix to read port from configuration also without VHM
Fix string interpolation
don't cast str, use :d
Merge pull request #5 from saily/consumer_hostname

Added a configureable hostname, port, scheme and use_vhm keywords
Use http as default scheme
use_vhm=False for ZAMQP Test Layer