newRPL - Wiki examples for PEEK, POKE and NEWOB commands

[JoJo1973]

I moved the MSOLVE draft to a new chapter dedicated to numerical applications and added an 80% done article about numerical integration - it just lacks more examples - after showing the strength of the algorithm I want to add a few cases that push the envelope (not the Simpson's in particular, but something that gives a very broad introduction to the sad reality that no algorithm is good for any conceivable case).

Basically:

* improper integrals of the two kinds
* removable discontinuities
* strongly oscillating functions e.g. sin(1/x)

After that, I'll do the same for MSOLVE.