Import gofmt.sh helper from asciigoat.org/ini

Signed-off-by: Alejandro Mery <amery@geeks.cl>
scanner.Terminal: A literal (utf8) string within a document

Signed-off-by: Alejandro Mery <amery@geeks.cl>
scanner.Scanner: initial struct and methods for the low level text scanner

Signed-off-by: Alejandro Mery <amery@geeks.cl>