add error message for jenkins, playground-308
Merge branch 'master' of https://github.com/gregorybesson/playground
update skin for jenkins, playground-308
add install demo for unix, playground-304
add install demo for unix, playground-304
update readme for install_demo, playground-304
update readme for install_demo, playground-304
add install_demo.bat
Merge pull request #29 from thomaroger/troger-feat-install-demo-playground-304

[WIP] Ajout d'un setup pour playground demo, playground-304