docs: add documentation for quotes rule
fixes #446: join paths without additional delimiters
Update doc title for quote
Merge pull request #445 from mduvall/quotes-docs

docs: add documentation for quotes rule
Merge pull request #447 from michaelficarra/GH-446

fixes #446: join paths without additional delimiters
Fixed reported line number for trailing comma error

The `no-comma-dangle` rule previously reported the ArrayExpression
or ObjectExpression node when finding a tailing comma. As a result
the rule would report the incorrect line for the error.

For example, in the code below line 1 would be reported as having
a trailing comma when line 3 is the true culprit!

var obj = {
	prop: "val",
	anotherProp: "va",
};

This fix reports the Property node in the case of an ObjectExpression
and whatever node type the array item is in the case of an
ArrayExpression.