updatet readme and gif

README.md

@@ -5,14 +5,12 @@ C.A.V.A. (M.P.)
 
 by [Karl Stavestrand](mailto:karl@stavestrand.no)
 
-Now with more colors! Use hex codes in config, for example:
+Now with multicolored rainbow:
 ```
-background = '#253552'
+rainbow = 1
-foreground = '#FF479C'
 ```
-(hex code must be within '')
 
-![spectrum](https://cloud.githubusercontent.com/assets/5231746/7368413/7d7ca93e-ed9f-11e4-842f-61c54fc03dbe.gif "spectrum")
+![spectrum](https://raw.githubusercontent.com/karlstav/cava/gh-pages/cava_rainbow.gif "spectrum")
 
 thanks to [anko](https://github.com/anko) for the gif, here is the [recipe]( http://unix.stackexchange.com/questions/113695/gif-screencastng-the-unix-way).