Added Migrations library, config and an example controller/migration file.
diff --git a/application/config/migration.php b/application/config/migration.php
new file mode 100644
index 0000000..37b1b85
--- /dev/null
+++ b/application/config/migration.php
@@ -0,0 +1,38 @@
+<?php defined('BASEPATH') OR exit('No direct script access allowed');
+/*
+|--------------------------------------------------------------------------
+| Enable/Disable Migrations
+|--------------------------------------------------------------------------
+|
+| Migrations are disabled by default for security reasons.
+| You should enable migrations whenever you intend to do a schema migration
+| and disable it back when you're done.
+|
+*/
+$config['migration_enabled'] = TRUE;
+
+
+/*
+|--------------------------------------------------------------------------
+| Migrations version
+|--------------------------------------------------------------------------
+|
+| This is used to set migration version that the file system should be on.
+| If you run $this->migration->latest() this is the version that schema will
+| be upgraded / downgraded to.
+|
+*/
+$config['migration_version'] = 1;
+
+
+/*
+|--------------------------------------------------------------------------
+| Migrations Path
+|--------------------------------------------------------------------------
+|
+| Path to your migrations folder.
+| Typically, it will be within your application path.
+| Also, writing permission is required within the migrations path.
+|
+*/
+$config['migration_path'] = APPPATH . 'migrations/';