began section on SciPy

This lab will also cover an introduction to SciPy.
source to be included in lab
add a scipy demonstration
minor edits to make code clearer
Merge branch 'arrscipy' of git://github.com/ayr0/numerical_computing into scipy
Edits to scipy addition to arrays lab.
Merge branch 'master' into scipy
Merge branch 'master' into arrscipy
Merge branch 'scipy' of git://github.com/insertinterestingnamehere/numerical_computing into insertinterestingnamehere-scipy
minor edit

removed line that doesn't contextually fit.
minor formatting change
Merge pull request #109 from ayr0/arrscipy

Add section about SciPy in Arrays lab.
Merge pull request #111 from AZaitzeff/vector

Lab: Vectorization
Merge branch 'master' into vector