Added migration to drop snippet_page table.

Author: Rodrigo Garcia Suarez

db/migrate/5_drop_snippet_page.rb

@@ -0,0 +1,20 @@
+class DropSnippetPage < ActiveRecord::Migration
+
+  def self.up
+    remove_index :snippet_page, :snippet_id
+    remove_index :snippet_page, :page_id
+    drop_table :snippet_page
+  end
+
+  def self.down
+    create_table :snippet_page do |t|
+      t.integer :snippet_id, :null => false, :references => [:snippets, :id]
+      t.integer :page_id, :null => false, :references => [:pages, :id]
+      t.integer :position, :null => false, :default => 0
+    end
+
+    add_index :snippet_page, :snippet_id
+    add_index :snippet_page, :page_id
+  end
+  
+end