Fix example version numbers in README

Author: stuffandthings

README.md

@@ -10,7 +10,7 @@ Add the plugin to your `project/plugins.sbt`:
 addSbtPlugin("com.lightbend.sbt" % "sbt-javaagent" % versionNumber)
 ```
 
-The version number is determined by the latest package, and can be deduced from the [version.sbt](https://github.com/sbt/sbt-javaagent/blob/master/version.sbt) file, i.e. if the version.sbt is "0.15-SNAPSHOT" then the latest released version is probably "0.14".  You can see the full version packages in the bintray repository:
+The version number is determined by the latest package, and can be deduced from the [version.sbt](https://github.com/sbt/sbt-javaagent/blob/master/version.sbt) file, i.e. if the version.sbt is `0.1.5-SNAPSHOT` then the latest released version is probably `0.1.4`.  You can see the full version packages in the bintray repository:
 
 https://dl.bintray.com/sbt/sbt-plugin-releases/com.lightbend.sbt/sbt-javaagent/scala_2.12/sbt_1.0/