* Use docker images from docker hub instead of building them on Travis
* Fix doxygen warnings for Markdown Files
* Modify Travis build matrix to include stages and additional jobs
* Add doxygen2jsdoc submodule
* Add doxyport submodule
* Remove duplicated code in doxy/node directory
* Generate documentation for each language in Travis
Signed-off-by: Nicolas Oliver <dario.n.oliver@intel.com>
Make a build heriarchy to reduce images size.
Add Android Things builds to build matrix.
Drop gcc-4 builds, use gcc-5 and gcc-6 instead.
Add SonarQube static analysis scans.
Signed-off-by: Nicolas Oliver <dario.n.oliver@intel.com>
