Update command line usage and Java installation check

Added instructions for checking Java installation and updated command usage for running Flux workflows.

Author: TobiasNx

getting-started.md

@@ -16,10 +16,18 @@ For a tutorial, see [metafacture-tutorial](https://metafacture.github.io/metafac
 
 ## Command line
 
-To use Metafacture as a command-line tool, download the latest Metafacture release from our [releases page](https://github.com/metafacture/metafacture-core/releases). Extract the downloaded archive and change into the newly created directory (e.g. `cd metafacture-runner-0.4.0`). Run a Flux workflow with:
+Check if Java 11 or higher is installed with java -version in your terminal. If not, install Java 11 or higher.
 
-`$ ./bin/metafix-runner /path/to/your.flux` on Unix/Linux/Mac or
-`$ ./bin/metafix-runner.bat /path/to/your.flux` on Windows.
+To use Metafacture as a command-line tool, download the latest Metafacture release from our [releases page](https://github.com/metafacture/metafacture-core/releases).
+
+Download metafacture-core-$VERSION-dist.tar.gz or the zip version and extract the archive to your choosen folder. In the folder you find the flux.bat and flux.sh
+
+The code below assumes you moved the resulting folder to your home directory and renamed it to "metafacture".
+
+Run a Flux workflow with:
+
+`$ ./metafacture/flux.sh /path/to/your.flux` on Unix/Linux/Mac or
+`$ ./metafacture/flux.bat /path/to/your.flux` on Windows.
 
 To get started, you can export a workflow from the Playground (last button, !["Export Workflow"](img/export.png)).