Fully embrace Ruby 1.9 hash syntax

Didn't bother with files in db/, config/, or features/

app/models/snippet.rb

@@ -2,29 +2,29 @@ class Snippet < ActiveRecord::Base
   include Linguist::BlobHelper
 
   belongs_to :project
-  belongs_to :author, :class_name => "User"
-  has_many :notes, :as => :noteable, :dependent => :destroy
+  belongs_to :author, class_name: "User"
+  has_many :notes, as: :noteable, dependent: :destroy
 
   delegate :name,
            :email,
-           :to => :author,
-           :prefix => true
+           to: :author,
+           prefix: true
   attr_protected :author, :author_id, :project, :project_id
 
   validates_presence_of :project_id
   validates_presence_of :author_id
 
   validates :title,
-            :presence => true,
-            :length   => { :within => 0..255 }
+            presence: true,
+            length: { within: 0..255 }
 
   validates :file_name,
-            :presence => true,
-            :length   => { :within => 0..255 }
+            presence: true,
+            length: { within: 0..255 }
 
   validates :content,
-            :presence => true,
-            :length   => { :within => 0..10000 }
+            presence: true,
+            length: { within: 0..10000 }
 
   scope :fresh, order("created_at DESC")
   scope :non_expired, where(["expires_at IS NULL OR expires_at > ?", Time.current])