install script DO NOT MERGE

DO NOT MERGE
this is a test, I'm trying to implement the features suggested here: https://github.com/lodle/Desurium/pull/462#issuecomment-13395573

but I want to make sure that this works for other people as well.

input:
./build_desura.sh --compile desura -j 2 --rebuild cef check --help nope

output should be 
Make sure to run sudo ./install-deps.sh before compiling!

compile desura -j 2 
rebuild cef check 
help nope


when I only use --help at the end, I get "help help help" on last line, I have to fix this.