Build the matviz executable as a bundle
Merge pull request #3 from mathstuf/dev/osx-bundle

Build the matviz executable as a bundle
Install bundles to Applications/
First pass at an image histogram, serial right now

This populates the histogram, blocking the main GUI thread right now.
Simplified the calculation code slightly

Added an assert to ensure we catch all points, removed debug/left
over code and simplified the templated function slightly.
Merge pull request #4 from mathstuf/dev/osx-bundle-install

Install bundles to Applications/
Use a background thread to calculate histograms
Merge pull request #5 from cryos/histogram

Histogram
Add WIN32 keyword to executable too
Added a derived vtkChartXY class for picking isovalues

Listen for double clicks, invoke an event, link it to the Qt class
and next ask for an isosurface at the value clicked on the X axis.