Update README.markdown

FactoryGirl has changed a bunch, this sorta documents the various options
Merge pull request #18 from sillylogger/patch-1

Update README.markdown
Merge pull request #19 from okcwest/master

Handle edge case where table name matches a global module name
Add MIT license to gemspec
Merge pull request #20 from Casecommons/add-license-to-gemspec

Add MIT license to gemspec
bump version
updating .rvmrc to use ruby 1.9.3
Support writing of fixtures with attributes that use custom serializers
Merge branch 'master' of https://github.com/rdy/fixture_builder