adding more info about Eclipse validation issue

readme.md

@@ -187,7 +187,7 @@ Here is a list of them:
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-    <td>Eclipse: validation bug when working with .tag/.tagx files</td>
+    <td>Eclipse: validation bug when working with .tag/.tagx files (has only been fixed for Eclipse 4.3 (Kepler). <a href="https://github.com/spring-projects/spring-petclinic/issues/14">See here for more details.</a></td>
     <td>
       <a href="https://issuetracker.springsource.com/browse/STS-3294"> STS-3294</a>
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