README.md: go install

mv corylus/main.go out of cmd/

Move generators into seg package

Add .gitignore

Add Makefile

Add seg time-unix

Add seg cwd-count

Add cwd.go

Change output example

Add devel list link

Show two chars in CWD if first is '.'

Say how to contribute

Say how to install the program

Add README.md

Add Go stuff

Add LICENSE

Initial commit