Update readme and travis build

Signed-off-by: Gaetan Semet <gaetan@xeberon.net>
validate.sh can validate all codes

Signed-off-by: Gaetan Semet <gaetan@xeberon.net>
pylint: all code is validated now. Can be travis'ed now!

Signed-off-by: Gaetan Semet <gaetan@xeberon.net>
pip: needed tools for validate on travis

Signed-off-by: Gaetan Semet <gaetan@xeberon.net>
Execute validate.sh on travis

Signed-off-by: Gaetan Semet <gaetan@xeberon.net>
fix for travis

Signed-off-by: Gaetan Semet <gaetan@xeberon.net>
changes with new version of autopep8

Signed-off-by: Gaetan Semet <gaetan@xeberon.net>
Merge pull request #351 from Stibbons/master

Merge Stibb/Guake