All unexposed vars are underscored
Merge pull request #1368 from palantir/underscoreUnexposedAxis

[Axis] - All unexposed vars are underscored
abstractComponent protected
gridlines unexposed
horizontalLegend underscored
label underscored
legend underscored
table underscored
abstractComponent function underscored
gridlines function underscored
horizontalLegend function underscored
legend function underscored
Misspelled _xOrigin _yOrigin
More misspellings
Merge pull request #1374 from palantir/underscoreUnexposedOtherComponents

Underscore unexposed other components
Merge branch 'develop' into underscoreUnexposed

Conflicts:
	plottable.js
	src/components/axes/numericAxis.ts
Merge branch 'underscoreUnexposed' of github.com:palantir/plottable into underscoreUnexposed

Conflicts:
	src/components/legend.ts
	src/components/table.ts
underscore timeAxis
label instance vars underscored
underscore broadcaster