cleared out error messages and path VnV print info from cells in several tutorial ipython notebooks.
removed error print messages from example ipython notebooks in all locations possible; made one plot inline and added to the ipython notebook so it will be visible.
made ace plot also inline.
added matplotlib inline command to examples with plots.
merged upstream into origin.
Merge pull request #575 from rachelslaybaugh/develop

cleanup of example and tutorial ipython notebooks