Fixes nuspec nlog version to agree with packages.config version.
Fixes nuspec nlog version to agree with packages.config version.

stefanschneider/IronFrame,cloudfoundry/IronFrame,stefanschneider/IronFrame,cloudfoundry-incubator/if_warden,cloudfoundry-incubator/IronFrame,cloudfoundry/IronFrame,cloudfoundry-incubator/if_warden,cloudfoundry-incubator/IronFrame