Added link section with ref to @tv's fork

Author: joliv

README.md

@@ -44,6 +44,8 @@ spark.Line(temps)
 
 Doesn't say much without knowing the min and max there (about 65° and 105°—why do people live there, again?) but you can clearly see the seasonal trend.
 
-Zach Holman does a great sell too, and this is really just a port of [his neat tool](https://github.com/holman/spark). There are some cool examples there. Oh, and if you really want to you can pore over the full docs at [godoc.org](http://godoc.org/github.com/joliv/spark).
+* Zach Holman does a great sell too, and this is really just a port of [his neat tool](https://github.com/holman/spark). There are some cool examples there.
+* [@tv](https://twitter.com/tv) added a `main()` with arg parsing so you can use it in your terminal. You can find that [here](https://github.com/tv42/sparkbar).
+* Oh, and if you really want, you can pore over the full docs at [godoc.org](http://godoc.org/github.com/joliv/spark).
 
 Licensed under GPLv3.