Fixes for Broken Examples ...

[sanguineturtle]

Opening a PR to track small fixes to broken examples (largely due to interface changes):

1. career_vf_plot.py [fix issued]
2. mc_convergence_plot.py [see issue [Examples] mc_convergence_plot.py IndexError #93]

[coveralls]

Coverage remained the same when pulling c3f35e1 on examplefixes into 702abc1 on master.

[sanguineturtle]

Pushed fix to mc_compute_stationary.

@jstac This PR contains two small changes to fix the examples listed above. This is now OK to merge once Travis CI reports back.

[coveralls]

Coverage remained the same when pulling 773990a on examplefixes into 702abc1 on master.

[sanguineturtle]

@jstac I have added a minor adjustment to the current ipython notebook for the finite_mc_solutions.ipynb notebook to fix the index issue. However as documented in Issue #93 @oyamad has an updated notebook where irreducibility and aperiodicity are examined.

[coveralls]

Coverage remained the same when pulling 773990a on examplefixes into 702abc1 on master.

[jstac]

@sanguineturtle Many thanks. The build is failing but it's due to a Python 3 issue caused by my changes. I'll accept your PR and fix the build problem separately.