Update license/project URLs to point at octokit

Author: jcansdale

Octokit.GraphQL.nuspec

@@ -6,8 +6,8 @@
     <authors>GitHub</authors>
     <owners>GitHub</owners>
     <repository type="git" url="https://github.com/octokit/octokit.graphql.net" />
-    <licenseUrl>https://github.com/grokys/octokit.graphql/blob/master/LICENSE.txt</licenseUrl>
-    <projectUrl>https://github.com/grokys/octokit.graphql</projectUrl>
+    <licenseUrl>https://github.com/octokit/octokit.graphql.net/blob/HEAD/LICENSE.md</licenseUrl>
+    <projectUrl>https://github.com/octokit/octokit.graphql.net</projectUrl>
     <iconUrl>https://f.cloud.github.com/assets/19977/1441274/160fba8c-41a9-11e3-831d-61d88fa886f4.png</iconUrl>
     <requireLicenseAcceptance>false</requireLicenseAcceptance>
     <description>An async-based GitHub GraphQL client library for .NET</description>