Updating readme to point bundle install to this repo.

README.md

@@ -5,11 +5,11 @@
 Add the gems to your Gemfile:
 
     gem 'delayed_job'
-    gem 'delayed_job_mongo_mapper'
+    gem 'delayed_job_mongo_mapper' => :git => "git://github.com/thisduck/delayed_job_mongo_mapper.git"
 
 After running `bundle install`, create the indexes (and don't forget to do this on your production database):
 
-    script/rails runner 'Delayed::Backend::MongoMapper::Job.create_indexes'
+    rails runner 'Delayed::Backend::MongoMapper::Job.create_indexes'
 
 That's it. Use [delayed_job as normal](http://github.com/collectiveidea/delayed_job).