Added comments to some of the lab solutions
Merge branch 'numpy' of https://github.com/ayr0/numerical_computing into numpy
Merge branch 'master' into numpy
Merge branch 'numpy' of https://github.com/ayr0/numerical_computing into numpy
Merge branch 'master' into numpy
Merge branch 'master' into numpy
Merge branch 'master' into numpy
added explanation of matrix class
First series of edits to the first NumPy lab.
Merge pull request #302 from abefrandsen/vol_1_edits

Vol 1 edits
Made more edits to vol 2 lab 1.
Fixed the namedtuple example code.
Merge branch 'master' into numpy
Finished first pass through the first NumPy lab.
A few more edits to the first arrays lab.
Merge pull request #303 from insertinterestingnamehere/numpy

Numpy
Merge branch 'numpy2' of https://github.com/ayr0/numerical_computing into numpy
Merge pull request #290 from AZaitzeff/comments

Added comments to some of the lab solutions
Merge branch 'master' into numpy
ufuncs and useful functions and polynomials

Added another blurb about ufuncs and polynomials.

Added table of useful functions.