Added an icon url to the nuspec
as per http://www.nuget.org/packages/DDEX-Deserialiser/
Merge pull request #153 from AnthonySteele/nuget_icon

Added an icon url to the nuspec
changed endpoint url
instead of "~/merchandising/list/details" for editorial it should have "~/merchandising/list"
Actually it's "~/editorial/list"
Merge pull request #154 from AnthonySteele/merchandising_list

changed endpoint url