remove number for source

src/rate-limiting/rate-limiting.go

@@ -0,0 +1,15 @@
+// ## Rate Limiting
+package main
+
+import "time"
+import "fmt"
+
+func main() {
+    throttle := time.Tick(time.Millisecond * 200)
+    for {
+        <-throttle
+        go fmt.Println("rate-limited action")
+    }
+}
+
+// todo: credit code.google.com/p/go-wiki/wiki/RateLimiting