Capitalize numpy.

doc/index.txt

@@ -6,7 +6,7 @@ Theano is a Python library that allows you to define, optimize, and
 evaluate mathematical expressions involving multi-dimensional
 arrays efficiently. Theano features:
 
-* **tight integration with numpy** -- Use `numpy.ndarray` in Theano-compiled functions.
+* **tight integration with NumPy** -- Use `numpy.ndarray` in Theano-compiled functions.
 * **transparent use of a GPU** -- Perform data-intensive calculations up to 140x faster than with CPU.(float32 only)
 * **efficient symbolic differentiation** -- Theano does your derivatives for function with one or many inputs.
 * **speed and stability optimizations** -- Get the right answer for ``log(1+x)`` even when ``x`` is really tiny.