fix

go.mod

@@ -58,7 +58,6 @@ require (
 	github.com/peterh/liner v1.1.0
 	github.com/pkg/errors v0.8.1
 	github.com/robertkrimen/godocdown v0.0.0-20130622164427-0bfa04905481
-	github.com/russross/blackfriday-tool v0.0.0-20120308051103-a78eb387e806
 	github.com/ssor/bom v0.0.0-20170718123548-6386211fdfcf // indirect
 	github.com/streamrail/concurrent-map v0.0.0-20160823150647-8bf1e9bacbf6
 	github.com/tmc/scp v0.0.0-20170824174625-f7b48647feef

go.sum

@@ -157,8 +157,6 @@ github.com/robertkrimen/godocdown v0.0.0-20130622164427-0bfa04905481 h1:jMxcLa+V
 github.com/robertkrimen/godocdown v0.0.0-20130622164427-0bfa04905481/go.mod h1:C9WhFzY47SzYBIvzFqSvHIR6ROgDo4TtdTuRaOMjF/s=
 github.com/russross/blackfriday v1.5.1 h1:B8ZN6pD4PVofmlDCDUdELeYrbsVIDM/bpjW3v3zgcRc=
 github.com/russross/blackfriday v1.5.1/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g=
-github.com/russross/blackfriday-tool v0.0.0-20120308051103-a78eb387e806 h1:eehmvKp7Y/oJnZLyFrC+NFtDb5aMVW25QHzXjs+egWE=
-github.com/russross/blackfriday-tool v0.0.0-20120308051103-a78eb387e806/go.mod h1:Dn/w91XVDVHljHfa908Dn3l6S8XF0zRm67IbS87oFRI=
 github.com/sendgrid/rest v2.4.1+incompatible h1:HDib/5xzQREPq34lN3YMhQtMkdXxS/qLp5G3k9a5++4=
 github.com/sendgrid/rest v2.4.1+incompatible/go.mod h1:kXX7q3jZtJXK5c5qK83bSGMdV6tsOE70KbHoqJls4lE=
 github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAmXWZgo=

tools.go

@@ -3,7 +3,6 @@
 package main
 
 import (
-	_ "github.com/russross/blackfriday-tool"
 	_ "github.com/robertkrimen/godocdown/godocdown"
 )