prefer npm_config_tmp for tmp directory to place downloaded binary - closes #212
remove uneeded progress dependency
bump to v2.1.19 with tmp directory fix - refs #212
add rpath linker option in binding.gyp when --sqlite option is used with a custom sqlite
use npm explore for configure to avoid node-gyp needing to be on PATH
test the highest level binary v10 - refs https://github.com/mapbox/node-sqlite3/wiki/Binaries
nevermind: travis does not have the v0.9.x series available
Update for 0.11.9