Updated .nuspec files with new license tag

[parrainc]

Fixes #601

[jayaranigarg]

@parrainc : Build is failing with error 'Cannot find file License.txt'.
Few changes that needs to be done:

1. Rename the License file to License.txt
2. Make changes in the build script to make sure this license file is dropped to staging directory i.e. something like

	#Copy over license file to staging directory
	$licenseFilePath = Join-Path $env:TF_ROOT_DIR "LICENSE.txt"
	Copy-Item $licenseFilePath $stagingDir -Force

[parrainc]

Done. License file was renamed as part of first commit, what i missed was updating the build script to copy the file over staging dir.

[parrainc]

@jayaranigarg just noticed the azure pipelines (TestFx.PR) check throw a few warnings and failed with a unit test project due to same warning: "The package signature file entry is invalid. The central directory header field 'compression method' has an invalid value (8)"

I'm not sure if this have something to do with the nuget version that is being pulled in, but it would help updating the "Pull in NuGet" task given that the minimum version where this nuspec changes are supported is v4.9.2 and the pipeline is pulling v4.5.1.

[jayaranigarg]

I'm not sure if this have something to do with the nuget version that is being pulled in, but it would help updating the "Pull in NuGet" task given that the minimum version where this nuspec changes are supported is v4.9.2 and the pipeline is pulling v4.5.1.

@parrainc : In this case, consider changing azure-pipelines.yml file to pull in 4.9.2 version.

[jayaranigarg]

@parrainc : The build is failing for NetCore PlatformService csproj. This seems to be a known issue .
The above thread should help to unblock the PR.

[parrainc]

oh, good to hear (the known issue part). I'm fixing it right away and push it up again.

[jayaranigarg]

@parrainc : Awesome 🎉 Thank you for your contribution!! Will go ahead and merge the PR.