Add alternative technique for warping

[nikreiman]

1. Process the track with MixedInKey to find out it's tempo.
2. Drop the track into Ableton and set the Ableton core tempo to the calculated BPM.
3. Drag the Start Flag to the edge of the first kickdrum.
4. Right click on the flag then select 'Warp to XXX Bpm' (XXX being the tempo you set the Ableton core clock to)