Improving Swashbuckle's parameter description capabilities
* parameter descriptions can be properly read if the parameter name is overridden by an attribute (e.g. [FromUri(Name = "NewName")]
* parameter descriptions can be read from any level of the XML comment for the parameter (not just nested nodes)
Merge branch 'master' of https://github.com/nskirov/Swashbuckle into nskirov-master

Conflicts:
	Swashbuckle.Core/SwaggerExtensions/ApplyActionXmlComments.cs
Merge branch 'nskirov-master'