Include hidden files in the zip

Without the hidden files some packages will be broken. You gotta change this line to be
`zip -r /io/lambda.zip * .[^.]*`

Also I'd rather use this as a layer, so we need to zip the files in a `python/` directory like so
```
cd tmp411
zip -r /io/lambda.zip *

cd ..
mv tmp411 python
zip -r /io/lambda-layer.zip python
```
