Update README.md
added warning if class does not exist
added tests for 3 times rename that were successful
added tests that the object pool is removed when class is deleted by migration
inserted travis build status image
modified the checkout of the maglev branch
Update install.sh
moved rake to beginning od reakefile
Added active support patch back again.
Removed gem :rubygems as indicated by bundler on travis.
Print no ruby warnings during tests.
Removed include monkey patch from MaglevSupport. Not necessary.
Added migration cleaning to migration scenario setup method.
Added ruby_graph tool for getting all modules referenced by a given startmodule.
made is possible to create an empty migration and migrate
remmoved old .rake fikle
Ruby graph improvement: directly sorting it.
now Rakefile needs to do require 'maglev_record/raketasks' to get the rake tasks
renamed the file
setting modules maglev_persistable in the right order