committing tom's recent changes into my fork for the gh-pages

charts on front page need unique names, otherwise clipping bugs are introduced.

fixed errors in how indexCharts displayed Axes and updated them to use the new Axis.display() function

updated gruntfile to not watch insight root directory, and update using the zip file instead

removed unneeded example
Merge pull request #67 from Stavrakakis/gh-pages

Fixed duplicate chart name bug in index charts