Create table libros
Fixed table name libros
Rename field nombre_libros to nombre
Merge branch 'master' into 28-Create-Table-Libros
Merge pull request #28 from rbarrera87/28-Create-Table-Libros

crear una tabla llamada libros
fixed migration-add_fk_columns_to_perfiles Delete add_change_to_perfiles.rb
solved the problem with schema and migration