this addon displays:

• the present skill to use for warrior tanks to maximize threat per sec in the infinite rage scenario.
• the first future skill and the time left until the skill should be used.
• whether heroic strike should be used (check if rage is over 40) and the number of heroic strikes one can cast before rage drops too low.

the basic principles of the rotation are:

1. shield slam>revenge>conc. blow> shockwave>devastate.
2. only use revenge as first or second skill after shield slam.
3. only use conc. blow or shockwave as 3rd skill after shieldslam.

These principles have been numerically tested by myself and i can safely conclude that the tps increase from using only principle 1 to using all 3 principles is not negligible.