Add link to travis doc
Add link to travis doc

Travis in the container mode can be provided
with custom sources.

Add link documentation of source and package white list.

Signed-off-by: Kevin Rocard <f6672397850e914591889d29dcaf9077eb1a8a4f@intel.com>

mgaio/parameter-framework,dawagner/parameter-framework,01org/parameter-framework,mgaio/parameter-framework,dawagner/parameter-framework,krocard/parameter-framework,krocard/parameter-framework,clero/parameter-framework,krocard/parameter-framework,miguelgaio/parameter-framework,mgaio/parameter-framework,clero/parameter-framework,clero/parameter-framework,miguelgaio/parameter-framework,dawagner/parameter-framework,01org/parameter-framework,01org/parameter-framework,miguelgaio/parameter-framework