Update rubocop config to work again.

.gitignore

@@ -6,3 +6,4 @@
 /pkg
 /rdoc
 /.yardoc
+/tmp

.rubocop

@@ -0,0 +1,2 @@
+--display-cop-names
+--fail-level=W

.rubocop-disables.yml

@@ -110,10 +110,8 @@ Style/ConstantName:
 Metrics/CyclomaticComplexity:
   Max: 22
 
-# Offense count: 1
-# Cop supports --auto-correct.
-Style/DeprecatedHashMethods:
-  Enabled: false
+Style/PreferredHashMethods:
+  EnforcedStyle: verbose
 
 # TODO: docs
 # Offense count: 17

.rubocop.yml

@@ -1,3 +1,7 @@
 ---
 inherit_from:
 - .rubocop-disables.yml
+
+AllCops:
+  Exclude:
+    - 'tmp/*.rb'