Export variables in TravisCI tests
Export variables in TravisCI tests

ENGINE_EXECUTABLE should now be used by make
This will most likely cause other tests to fail

soundyogi/casperjs,mickaelandrieu/casperjs,n1k0/casperjs,n1k0/casperjs,jefleponot/casperjs,jefleponot/casperjs,n1k0/casperjs,soundyogi/casperjs,n1k0/casperjs,hlr1983/casperjs,casperjs/casperjs,casperjs/casperjs,hlr1983/casperjs,casperjs/casperjs,hlr1983/casperjs,hlr1983/casperjs,istr/casperjs,hlr1983/casperjs,mickaelandrieu/casperjs,soundyogi/casperjs,mickaelandrieu/casperjs,jefleponot/casperjs,soundyogi/casperjs,casperjs/casperjs,mickaelandrieu/casperjs,istr/casperjs,jefleponot/casperjs,jefleponot/casperjs,jefleponot/casperjs,istr/casperjs,soundyogi/casperjs,istr/casperjs,casperjs/casperjs,mickaelandrieu/casperjs,soundyogi/casperjs,casperjs/casperjs,n1k0/casperjs,n1k0/casperjs,istr/casperjs,hlr1983/casperjs,mickaelandrieu/casperjs,istr/casperjs