remove number for source

src/reading-files/reading-files.go

@@ -0,0 +1,16 @@
+// ## Reading files
+
+package main
+
+import "io/ioutil"
+import "fmt"
+
+func main() {
+    contents, err := ioutil.ReadFile("xx-file-read.go")
+    if err != nil {
+        return
+    }
+    fmt.Print(string(contents))
+}
+
+// todo: streaming reads