Correct default scaleShowLabels value to match js file setting

default scaleShowLabels value for Line and Bar is true in js file, but
it is false in document page.
Correct document page to match the value to reduce the confuse
Merge pull request #126 from Ider/master

Correct default scaleShowLabels value in document
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Merge pull request #139 from ilyakatz/patch-1

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