Fixed .travis.yml file according travis-lint output.
Fixed .travis.yml file according travis-lint output.

meshell/Cpp_project_template,meshell/Cpp_project_template,mariokonrad/Cpp_project_template,mariokonrad/Cpp_project_template,meshell/Cpp_project_template,meshell/Cpp_project_template,mariokonrad/Cpp_project_template