Add disclaimer about being WIP (#4)

diff --git a/README.md b/README.md
index 9bd0218..73defcf 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # Apache Fluo Docker Image
 
+**This is currently a work in progress that depends on unreleased features of Fluo and will not be ready for use until after Fluo 1.2.0 is released.**  Sometime after Fluo 1.2.0 is released this project will make its first release.  The `mikewalch/fluo` DockerHub image is only for pre-release testing and is not a release.  Eventually this will project will create a `apache/fluo` image at DockerHub.
+
 ## Obtain the Docker image
 
 To obtain the docker image created by this project, you can either pull it from DockerHub at