Hello campoy (cc: golang-codereviews@googlegroups.com), I'd like you to review this change to https://code.google.com/p/go-tour
*** Submitted as https://code.google.com/p/go-tour/source/detail?r=48ecf339b494 *** go-tour: add import unused messages to TODO TBR=campoy R=campoy CC=golang-codereviews https://codereview.appspot.com/127720043