v0.2.3

Changelog

3747f7f jump back to previous directory in install script
120ad33 disable CGO during build for compatibilty reasons
154569c export tmp file path in install script
57ea3a8 make install script more portable (e.g. on Alpine Linux)
8efbd17 update install script
9243a16 add install script for latest release
015e712 sync Gopkg.lock