Document jenkinsci#359

src/main/java/org/jvnet/hudson/test/RealJenkinsRule.java

@@ -93,6 +93,7 @@
 import jenkins.util.Timer;
 import org.apache.commons.io.FileUtils;
 import org.apache.commons.io.IOUtils;
+import org.junit.Assume;
 import org.junit.rules.DisableOnDebug;
 import org.junit.rules.TestRule;
 import org.junit.rules.Timeout;
@@ -128,6 +129,7 @@
  * <li>Remote thunks must be serializable. If they need data from the test JVM, you will need to create a {@code static} nested class to package that.
  * <li>{@code static} state cannot be shared between the top-level test code and test bodies (though the compiler will not catch this mistake).
  * <li>When using a snapshot dep on Jenkins core, you must build {@code jenkins.war} to test core changes (there is no “compile-on-save” support for this).
+ * <li>{@link Assume} is not available.
  * <li>{@link TestExtension} is not available.
  * <li>{@link LoggerRule} is not available, however additional loggers can be configured via {@link #withLogger(Class, Level)}}.
  * <li>{@link BuildWatcher} is not available.