Merge pull request #1 from StephaneSeyvoz/plugin_integration

Plugin integration
Add --src-path in order to specify source path list.
The old way to specify source path still valid.
Both ways can be used.
Add travis yml file.
Merge pull request #2 from SESA188919/plugin_integration

Add --src-path in order to specify source path list.
Merge pull request #11 from Mind4SE/plugin_integration

Re-sync: Plugin integration