Added the wradlib_short_course material to the VM.

The new provision script download the wradlib_short_course repository
including the data.
Added apt-get update command
Merge pull request #5 from heistermann/master

Added the wradlib_short_course material to the VM.
Merge pull request #6 from DanielMichelson/master

Added quality plugins for beamb and bropo when installing
Added the baltrad2wradlib interoperability demo to the VM.

Added one provision script and introduced this into the Vagrantfile.
Data and scripts are downloaded from
https://github.com/heistermann/baltrad2wradlib.
Merge pull request #7 from heistermann/master

Added the baltrad2wradlib interoperability demo to the VM.
Added the provision of pyshp for reading shapefiles.

I added a single provision script named install_pyshp.sh and put that
into the Vagrantfile. In the future, we might have one provision script
for all optional dependencies.
Merge pull request #8 from heistermann/master

Added the provision of pyshp for reading shapefiles.
Removed hack that was needed to install RAVE on Ubuntu 14.04 before BALTRAD ticket 405 was resolved.