Adding data for unit test verification
Add python function for calculating and plotting probe - as is done in "higher orders" dialog of MATLAB UI.
Improve comments throughout and add descriptive print method
Added start of potential calculation in python for demonstration purposes
add simulation demo notebook to be used at EMAG 2013.
Bring probe.py up to date with functions that the notebook uses.
minor tweaks to notebook
Add scattering factor example to notebook example
Work on potential calculation example on notebook
Merge branch 'master' of https://github.com/msarahan/QSTEM

Conflicts:
	python/probe.py
-Fix bug from integer division in aberration function calculation.
-Add phase plotting methods.
Add reciprocal space calibration method
Fix some bad calls to ImageIOPtr when saving single atomic potentials
Add several labels, add some signals/slots to TDS options.  Insert placeholder for Chaco plot
Further work on notebook example
Add probe calculation caching back in
Fix a few more float/int bugs where diving by an int was truncating the result
Add atoms to composite volume.  Need to fix overlapping boxes!
Add ui tester file - need to first generate python from Qt ui file using either pyqt's pyuic4 or pyside's pyside-uic
(This tester file expects you to output the filename as qsUI.py)
Tweak several layout elements.  Change placeholder for plot.
Add description of regex used to parse coordinates from cfg files