Made jsbsim origin URL more firewall friendly.
@ -53,7 +53,7 @@ ln -fs /vagrant/Tools/vagrant/screenrc /home/vagrant/.screenrc
# build JSB sim
pushd /tmp
rm -rf jsbsim
git clone git://github.com/tridge/jsbsim.git
git clone https://github.com/tridge/jsbsim.git
sudo apt-get install -y libtool automake autoconf libexpat1-dev
cd jsbsim
./autogen.sh