initial import of the first lesson in ger/en (partial)
minor edit: removed 'high-level' from Java’s description as a programming language
switched folder structure from language centric to domain centric (i.e. processing, audio etc.)
change heading, code and emphasis format format to comply with markdown
changed external URL link formats with the following search replace in Sublime
search: \[\[(https?://([-\w\.]+)+(:\d+)?(/([\w/_\.]*(\?\S+)?)?)?)\|([\wäöüß]*)\]\]
replace: \[$7\]\($1\)
fixes an HTML umlaut
updated readme