WarpDrive: now in Go

# WarpDrive: the Go version.
## What does this do?
In short, instead of having a huge cd routine to get where you want, you use short keywords and patterns to warp to the directory in 8 ms.
See github.com/quackduck/WarpDrive for more info, that repo has the earlier, slower, Java version of this.
## Install directions
### If you're a bash or zsh user:
1. Put `bash-zsh-support/wd.sh` somewhere you want.
2. Put `. /path/to/wd.sh` in your relevant rc/profile file, you know what I mean
3. Run `go install` in this directory
4. Profit!
### If you're a fish user:
1. Put `fish-support/wd-go_on_prompt.fish` in `~/.config/fish/conf.d/`
2. Put `fish-support/wd.fish` in `~/.config/fish/functions/`
3. Run `go install` in this directory
4. Profit!
### If you use some other shell:
1. Go use fish/bash/zsh.
2. Read this file again.