feat(space-unary-ops) : 1 whitespace rule added (#4)

lib/configs/default.js

@@ -47,7 +47,7 @@ module.exports = {
     'no-with': 2,
     'quotes': [2, 'single', 'avoid-escape'],
     'semi': [2, 'always'],
-    'space-unary-ops': 0,
+    'space-unary-ops': [2, {'words': false, overrides : {'!': true, '!!': true}}],
     'strict': 0,
     'valid-typeof': 2,
     'wrap-iife': 0,