Addresses Issue #66 . This rule was actually added with v1.0.0 but due to the rule documentation missing I didn't realize it to close the issue earlier.
Renamed rule avoid-positive-tabindex to tabindex-no-positive to be more inline with the rule naming in eslint-plugin-jsx-a11y.
Added documentation for rule that had been missing.
Addresses Issue #66 . This rule was actually added with v1.0.0 but due to the rule documentation missing I didn't realize it to close the issue earlier.