Note 'no staging repository created' error in README (#98)

README.md

@@ -68,6 +68,8 @@ nexusPublishing {
 
 Finally, call `publishToSonatype closeAndReleaseSonatypeStagingRepository` to publish all publications to Sonatype's OSSRH Nexus and subsequently close and release the corresponding staging repository, effectively making the artifacts available in Maven Central (usually after a few minutes).
 
+Note that until [#19](https://github.com/gradle-nexus/publish-plugin/issues/19) is done, the `publishToSonatype closeAndReleaseSonatypeStagingRepository` tasks have to be executed in the same Gradle invocation because `closeAndRelease` relies on information that is not persisted between calls to Gradle. Failing to do so will result in an error like `No staging repository with name sonatype created`.
+
 Please bear in mind that - especially on the initial project publishing to Maven Central - it might be wise to call just `publishToSonatype closeSonatypeStagingRepository` and manually verify that the artifacts placed in the closed staging repository in Nexus looks ok. After that, the staging repository might be dropped (if needed) or manually released from the Nexus UI.  
 
 ### Full example