node-webkit 0.10.0 is released and we shall build for it
make a matrix of TARGET_ARCH, build on Linux 32-bit for node-webkit
upgrade `node-pre-gyp`, using the tarball of its `master` branch
Merge pull request #323 from mapbox/target-arch-matrix

Make a matrix of `${TARGET_ARCH}` values
node-webkit v0.10.1 is released (Jul 30, 2014), build for it
32bit Linux builds for node-webkit similar to `build_against_node.sh`
attempt to fix #325
fix travis apt install of multilib
re-enable entire matrix [skip ci]
Merge pull request #326 from mapbox/nw-32bit-fix

Nw 32bit fix
merge with master