Fix typo "by" to "but"
Merge pull request #73 from Voles/master

Fix typo "by" to "but"
fix typo regarding [object JSON]
Merge pull request #74 from nickb1080/master

fix typo regarding [object JSON]
Fix typo

The code sample says lastIndex is 7, the text said 6. The code sample is correct.
Merge pull request #75 from adamzr/master

Fix typo