working on gfm compat (helps #1224) (#1342)

* fix gfm compat

Signed-off-by: Kirill Danshin <k@guava.by>

* fix .travis.yml

Signed-off-by: Kirill Danshin <k@guava.by>

* requested changes

Signed-off-by: Kirill Danshin <k@guava.by>

.travis.yml

@@ -6,7 +6,4 @@ go:
 sudo: false
 
 install:
-  - go get github.com/russross/blackfriday
-  - go get github.com/PuerkitoBio/goquery
-  - go get github.com/gorilla/mux
-  - go get github.com/microcosm-cc/bluemonday
+  - go get -t -v ./...

repo.go

@@ -8,8 +8,7 @@ import (
 	"text/template"
 
 	"github.com/gorilla/mux"
-	"github.com/microcosm-cc/bluemonday"
-	"github.com/russross/blackfriday"
+	gfm "github.com/shurcooL/github_flavored_markdown"
 )
 
 // memory usage optimizations
@@ -24,25 +23,6 @@ const (
 	readmePath = "./README.md"
 	tplPath    = "tmpl/tmpl.html"
 	idxPath    = "tmpl/index.html"
-
-	bfHTMLRendererOpts = 0 |
-		blackfriday.HTML_USE_XHTML |
-		blackfriday.HTML_USE_SMARTYPANTS |
-		blackfriday.HTML_SMARTYPANTS_FRACTIONS |
-		blackfriday.HTML_SMARTYPANTS_DASHES |
-		blackfriday.HTML_SMARTYPANTS_LATEX_DASHES
-
-	bfMDOpts = 0 |
-		blackfriday.EXTENSION_NO_INTRA_EMPHASIS |
-		blackfriday.EXTENSION_TABLES |
-		blackfriday.EXTENSION_FENCED_CODE |
-		blackfriday.EXTENSION_AUTOLINK |
-		blackfriday.EXTENSION_STRIKETHROUGH |
-		blackfriday.EXTENSION_SPACE_HEADERS |
-		blackfriday.EXTENSION_HEADER_IDS |
-		blackfriday.EXTENSION_BACKSLASH_LINE_BREAK |
-		blackfriday.EXTENSION_DEFINITION_LISTS |
-		blackfriday.EXTENSION_AUTO_HEADER_IDS
 )
 
 var (
@@ -59,19 +39,7 @@ func generateHTML() {
 	exec.Command(git, pull).Output()
 
 	input, _ := ioutil.ReadFile(readmePath)
-	body := string(
-		bluemonday.UGCPolicy().SanitizeBytes(
-			blackfriday.Markdown(
-				input,
-				blackfriday.HtmlRenderer(
-					bfHTMLRendererOpts,
-					emtyStr,
-					emtyStr,
-				),
-				bfMDOpts,
-			),
-		),
-	)
+	body := string(gfm.Markdown(input))
 	c := &content{Body: body}
 
 	t := template.Must(template.ParseFiles(tplPath))