add some TODOs for getAssets
modify default gist viewer to http://pagist.github.io
remove show(T) as it has been made default.
initialize methods now use callSuper to set common fields.
bunch of significant changes.

- added srccode to hold source code
- allow template to be specified
- set static = T as default for show
- allow show to pass arguments to render
add a template for chart + code
modify default css in rNVD3.css
add create_chart to utils.R
bump up version
add print as alias for printChart and fix #38
add force directed graph to inst
bump version to 0.1.8
add hPlot (not finished)
update hPlot
Merge remote-tracking branch 'ramnathv/master' into add-hPlot-alternative
add lib as class to chartDiv and also include in payload.
add preliminary support for parallel coordinate charts.
bump up version.
add cdn to parcoords config
add lib as class to chart div in chart2.html