remove binary file skript.pdf
add .gitignore for latex projects
add Makefile
add script which automatically recompiles the tex file
bugfix: use \providecommand to define \thetheorem

On my machine \thetheorem was not defined. So I use \providecommand for a workaround.
add make target "upload_kulla"
fix typos (0 -> \emptyset; definition directed set; definition coendliche Menge)