Rule: no native reassignment
Merging no-native-reassign and no-redefine
Rule to warn on use of Math and JSON as functions
Merge pull request #118 from iancmyers/formatter-checkstyle

Formatter: Checkstyle (fixes #14)
Merge pull request #100 from ilyavolodin/no-native-reassign

Rule: no native reassignment
Merge pull request #120 from jamesallardice/rule-no-obj-calls

Rule: Warn on use of Math and JSON as functions
Added ability to retrieve scope using escope.

Added the `getScope` function to `eslint.js`. In the context of a rule, calling `getScope` will return an object representing the current scope.
Created no-label-var rule.

The no-label-var rule disallows creating a label that shares an identifier with a variable.

See: http://jslinterrors.com/a-is-a-statement-label/

Fixes #29