rename limit module to smooth

bin/hlsdump

@@ -28,7 +28,7 @@ var util = require('util'),
     fs = require('fs');
 
 var reader = require('../lib/reader'),
-    tssmooth = require('../lib/tslimit'),
+    tssmooth = require('../lib/tssmooth'),
     tsblast = require('../lib/tsblast');
 
 var src = process.argv[2];