The installation guide in README.md

Maybe a small correction (if I am right) for the installation guide.

Rather than using
```
git clone https://github.com/BlockResearchGroup/compas_cloud.git
pip install -e .
```

The file name 'compas_cloud' should be specified:
```
git clone https://github.com/BlockResearchGroup/compas_cloud.git
pip install -e compas_cloud

```
should it be correct...?

