Add crawler for MSBuild SonarQube Runner

msbuildsonarquberunner.groovy

@@ -0,0 +1,19 @@
+#!./lib/runner.groovy
+// Generates server-side metadata for MSBuild SonarQube Runner
+import net.sf.json.*
+
+def url = "https://api.github.com/repos/SonarSource/sonar-msbuild-runner/releases".toURL()
+def releases = JSONArray.fromObject(url.text)
+
+def json = []
+
+for (JSONObject release : releases) {
+  if (!release.get("draft") && !release.get("prerelease")) {
+    json << ["id": release.get("tag_name"),
+             "name": "MSBuild SonarQube Runner ${release.get("tag_name")}".toString(), 
+             "url": "https://github.com/SonarSource/sonar-msbuild-runner/releases/download/${release.get("tag_name")}/MSBuild.SonarQube.Runner-${release.get("tag_name")}.zip".toString()];
+  }
+}
+
+lib.DataWriter.write("hudson.plugins.sonar.MsBuildSonarQubeRunnerInstaller",JSONObject.fromObject([list:json]));
+