Merge pull request #153 from tpkelly/develop

Update README changelog
Merge pull request #156 from tpkelly/develop

Update references to npm to use 1.1.0
Setting horizontal axes to use text anchor 'middle' by default.
Merge pull request #161 from niksoper/dev

Setting horizontal axes to use text anchor 'middle' by default.
Updated change log to include horizontal axis text anchor to middle.
Future version number: X.X.X
Merge pull request #162 from niksoper/dev

Updated change log to include horizontal axis text anchor to middle.
Merge branch 'upstream' into develop

Conflicts:
	Changelog.txt