Updated to glide 0.9.3

Updated docker-go-dev to glide 0.9.3, including many bug fixes and some performance improvements.

Upgrading to Go 1.6

This release upgrades to Go 1.6

Upgrading to Glide 0.9 Stable

This release upgrades glide to 0.9.0, which includes many improvements

Add gox to enable cross-compilation

This release adds the gox binary to the set of utilities available in this image.

Adding goupx to enable smaller Go binaries

This release adds the goupx binary to the set of utilities available in this image.

0.5.0: Merge pull request #10 from arschles/glide-vsn

chore(Dockerfile): update glide to version 0.8.3