Install fails in directories containing a space

This is reproducible with the following:
```
mkdir Space\ Here
cd Space\ Here
npm i nsfw
```

This results in:
```
> node-gyp rebuild

  CXX(target) Release/obj.target/nsfw/src/NSFW.o
clang: error: no such file or directory: 'Here/node_modules/node-addon-api'
make: *** [Release/obj.target/nsfw/src/NSFW.o] Error 1
```