75 setup

solves #75, apart from configuration block (still has to be written)
tries to solve #76 
README.md changed quite a lot and can be tested with ataru
This can, btw, be written as:

```
    create_file(path, <<-EOS)
a lot of text and other things
EOS
```

Little know syntax oddity in Ruby, notice the place of the closing bracket for the argument list.