Add note about supported Java versions

README.md

@@ -2,15 +2,15 @@
 
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-[SDF](https://pubs.acs.org/doi/abs/10.1021/ci00007a012) parser written in Java running from command-line interface (CLI). Do you love️ Docker? You can use a lightweight [SDFEater container](https://hub.docker.com/r/lszeremeta/sdfeater)! SDFEater not only ~~eats~~ parse your SDF files, but also can add additional data to the output. The choice of output formats is really wide.
+[SDF](https://pubs.acs.org/doi/abs/10.1021/ci00007a012) parser written in Java running from command-line interface (CLI). You don't need to have new Java installed! Java 8 and above are supported. Do you love️ Docker? You can use a lightweight [SDFEater container](https://hub.docker.com/r/lszeremeta/sdfeater)! SDFEater not only ~~eats~~ parse your SDF files, but also can add additional data to the output. The choice of output formats is really wide.
 
 ## How to start
 
 You can use JAR file, run SDFEater from Docker image or build everything yourself. If you don't know what to choose, choose one of the first two options.
 
 ### JAR file
 
-You need Java installed.
+You need Java 8+ installed.
 
 1. Download the ready-to-use JAR `SDFEater-VERSION-jar-with-dependencies.jar` file from [project release](https://github.com/lszeremeta/SDFEater/releases) asset.