Small modif to cifar presentation.

doc/cifarSC2011/introduction.txt

@@ -231,6 +231,8 @@ Theano in one slide
  * It used to have no/poor support for internal looping and conditional
    expressions, but these are now quite usable.
 
+ * Automatic differentiation
+ 
 
 Project status
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@@ -278,7 +280,7 @@ How Fast are GPUs?
   - NVIDIA GTX580 (1.5Tf/s float32) 512 cores
   - GPUs are faster, cheaper, more power-efficient
 
- - Practice: 
+ - Practice (with Theano): 
   - Depends on algorithm and implementation!
   - Reported speed improvements over CPU in lit. vary *widely* (.01x to 1000x)
   - Matrix-matrix multiply speedup: usually about 10-20x.