Setting default bar alignment to 0.5 instead of 0
Merge branch 'develop' into defaultBarAlignmentFactor

Conflicts:
	plottable.js
Merge branch 'develop' into defaultBarAlignmentFactor

Conflicts:
	plottable.js
Merge pull request #1214 from palantir/defaultBarAlignmentFactor

Setting default bar alignment to 0.5 instead of 0