add a16z parser

feeds/parser/parser.go

@@ -10,6 +10,7 @@ import (
 
 var (
 	parsers = map[string]Parser{
+		"a16z.com":     a16zParser,
 		"cnbc.com":     cnbcParser,
 		"www.cnbc.com": cnbcParser,
 	}
@@ -29,7 +30,8 @@ func Parse(uri string) (string, error) {
 	return "", errors.New("no parser for url")
 }
 
-func cnbcParser(url string) (string, error) {
+func classParser(class string) Parser {
+	return func(url string) (string, error) {
 		// Request the HTML page.
 		res, err := http.Get(url)
 		if err != nil {
@@ -48,5 +50,14 @@ func cnbcParser(url string) (string, error) {
 			return "", err
 		}
 
-        return doc.Find(".PageBuilder-col-9").Html()
+		return doc.Find(class).Html()
+	}
+}
+
+func a16zParser(url string) (string, error) {
+	return classParser(".blog-content")(url)
+}
+
+func cnbcParser(url string) (string, error) {
+	return classParser(".PageBuilder-col-9")(url)
 }