Update README.md

Links to dependencies. Mention the Homebrew formula.

README.md

@@ -1,26 +1,37 @@
-You need to install rtmpdump to make it work
-and you need python-pyamf for kanal5play
+svtplay-dl
+==========
 
-this script works for:
-aftonbladet.se
-di.se
-dn.se
-dr.dk
-expressen.se
-hbo.com
-justin.tv
-kanal5.se
-kanal5play.se
-kanal9play.se
-nrk.no
-ruv.is
-svd.se
-sverigesradio.se
-svtplay.se
-tv4.se
-tv3play.se
-tv4play.se
-tv6play.se
-tv8play.se
-twitch.tv
-urplay.se
+You need:
+
+* [RTMPDump](http://rtmpdump.mplayerhq.hu/) 2.4 or higher
+* [PyCrypto](https://www.dlitz.net/software/pycrypto/) to download encrypted HLS streams
+* [PyAMF](http://www.pyamf.org/) for kanal5play.se
+
+This script works for:
+
+* aftonbladet.se
+* di.se
+* dn.se
+* dr.dk
+* expressen.se
+* hbo.com
+* justin.tv
+* kanal5.se
+* kanal5play.se
+* kanal9play.se
+* nrk.no
+* ruv.is
+* svd.se
+* sverigesradio.se
+* svtplay.se
+* tv4.se
+* tv3play.se
+* tv4play.se
+* tv6play.se
+* tv8play.se
+* twitch.tv
+* urplay.se
+
+If you have OS X and [Homebrew](http://mxcl.github.com/homebrew/) you can install with:
+
+    brew install svtplay-dl