added travis CI to comblayer
build matrix of G++ versions 4.9,5 ,6 & 7
also clang 3.8, 3.7, 3.9, 4.0, & 5.0
runs the unit tests and some simple model tests, example of using validCheck also included
need to decide what compiler versions actually want to support
currently everything fails, g++ fail to build and clang builds but then fail unit tests and fullbuild validCheck
but its a start and hopefully lead to more robust code
added travis CI to comblayer build matrix of G++ versions 4.9,5 ,6 & 7 also clang 3.8, 3.7, 3.9, 4.0, & 5.0 runs the unit tests and some simple model tests, example of using validCheck also included
need to decide what compiler versions actually want to support currently everything fails, g++ fail to build and clang builds but then fail unit tests and fullbuild validCheck
but its a start and hopefully lead to more robust code