update travis script for https://github.com/mapbox/mapbox-gl-native/pull/1339

refactor mbgl travis scripts

source travis_helper.sh, run setup.sh

pushd/popd

sudo false

travis matrix with c++14 support?

drop setup_mesa.sh

update binding.gyp

language: c

drop thread_object, add async_queue

fix async_queue.hpp includes

std::make_unique

pip install awscli

src/node_log.cpp

@@ -1,4 +1,5 @@
 #include "node_log.hpp"
+#include "util/async_queue.hpp"
 
 #include <mbgl/map/environment.hpp>