[eslint-v2][variables] add no-self-assign

packages/eslint-config-airbnb/rules/variables.js

@@ -11,6 +11,9 @@ module.exports = {
     'no-implicit-globals': 0,
     // disallow labels that share a name with a variable
     'no-label-var': 0,
+    // disallow self assignment
+    // http://eslint.org/docs/rules/no-self-assign
+    'no-self-assign': 2,
     // disallow shadowing of names such as arguments
     'no-shadow-restricted-names': 2,
     // disallow declaration of variables already declared in the outer scope