DOC: Added a hint on top of the getting started page that users might want to install the bleeding edge code.
DOC: Added a hint on top of the getting started page that users might want to install the bleeding edge code.

We can remove that hint once we have a continuous update of wradlib versions on PyPI via
Codeship. Until then, people shoudl be aware that wradlib on PyPI might be seriously
outdated.

jjhelmus/wradlib,jjhelmus/wradlib