Added sampling function and button. Visual confirmation is dysfunctional.
allow NA in mini plots
allow NA in select inputs
remove unecessary code
add boostrapCheckbox
Added xtable to dependencies
Added quitApp() on window.close
Prepared options object for addition of removal of NA handlers
Minor code cleanup
Changes in PackageInstallArgs

What's this good for?
Add crude facet support. Closes #22
Rename plot "Regression" -> "Scatter"
test icon
get changes from master
Added one-dimensional facet support and line drawing
fix data.table
Implemented modularised interface for more kick-ass analytical capabilities.
Resolved merge conflict caused by UI modularisation

Merge branch 'issue-21' of https://github.com/reinholdsson/iPlot into issue-21

Conflicts:
	R/app.R
Merge pull request #25 from reinholdsson/issue-21

Merge dev work on #21 and #22. Once we've decided on #12 this can be merged into master!
Resolve merge conflict issue-20 vs issue-12

Merge branch 'issue-12' into issue-20

Conflicts:
	R/app.R