Only add documentation about error types if there are actual soap
faults
Adds operation's documentation if WSDL provides it
Do not generate operation if it has not a SOAP action.

This works around panic issue when WSDLs declare HTTP bindings
Removes space between docs and function declaration
If WSDL message does not have parts, do not attempt to generate a Go type.
Adds new fixture for tests
Merge pull request #6 from cloudescape/fix_for_#5

Only generates operations for SOAP 1.1 port binding. Closes #5