Create install.md
Create install.md

Extracting installation instructions into install.md
frederickhofmann/frederickhofmann.github.io,Haufe-Lexware/Haufe-Lexware.github.io,DonMartin76/Haufe-Lexware.github.io,Haufe-Lexware/Haufe-Lexware.github.io,DonMartin76/Haufe-Lexware.github.io,frederickhofmann/frederickhofmann.github.io