Add documentation xml to build
Add documentation xml to build

Add documentation xml to build for the api project.
Planning on creating API docs from this.

opencolorado/.NET-Wrapper-for-CKAN-API,opencolorado/.NET-Wrapper-for-CKAN-API,DenverDev/.NET-Wrapper-for-CKAN-API,DenverDev/.NET-Wrapper-for-CKAN-API,opencolorado/.NET-Wrapper-for-CKAN-API