Did Jacobi rotation algorithm for different n.

Chose some values of n from 50 - 300, in increments of 50. Plotted
the number of iterations as function of n with iterationPlot.py. The
result is the figure iterations.eps.

Also wrote some notes (notes.md) about the algorithm, different
parameters, etc.
Merge branch 'development' of github.com:PaulMag/FYS3150_project2 into development