updated README (again).
updated README (again).

git-svn-id: 8cdfc6386a22bbfa63ea1d889feff7c1e4535dde@31725 ee427ae8-e902-0410-961c-c3ed070cd9f9

Desarrollo-CeSPI/pmPropelGeneratorPlugin,Symfony-Plugins/pmPropelGeneratorPlugin,Desarrollo-CeSPI/pmPropelGeneratorPlugin,Symfony-Plugins/pmPropelGeneratorPlugin