Merge pull request #3 from TobiasNx/patch-4

Update index.md

Author: Phu2

index.md

@@ -33,3 +33,8 @@ Deciding which parts are relevant to you depends on the way you are using Metafa
 
 While working with the playground or the command line you only need [Flux](/docs/flux/flux.html) and the transformation module [Fix](/docs/fix/fix.html).
 Have a look here for [Getting started](/docs/Getting-Started.html).
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+## Framework for Java integration/development
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+If you plan to use Metafacture as a Java library or if you wish to add commands to Flux. You should get familar with the [Framework](#framework).