basic travis config added
ingoring vendor dir
ssh2 extension installed in travis workers
ssh2 0.12-beta enabled
force the installation
adding empty file for the ssh2 installation process
let's try the shunt installation
empty file created on the fly
update composer and trigger a plain installation
removing the unrequired check
do not add the extension to the ini file
Merge pull request #2 from kpacha/travis_set_up

Travis set up