Update README.md

pip3 install bcbio-gff==0.6.4 click==6.7 decorator==4.2.1 networkx==2.1 numpy==1.14.2

PyYAML==3.12 six==1.11. --no-cache-dir --user

```

Note: the version numbers are minimal recommended versions, on many systems you can leave those out.

Note1: the version numbers are minimal recommended versions, on many systems you can leave those out.

Note2: With user-space installation of Python software you may need to set PYTONPATH accordingly, e.g.:

```

export PYTHONPATH="~/.local/bin"

```

To check its value, use:

```

echo $PYTHONPATH

```

### TE-greedy-nester