now removed the  the un needded primary key
now with add device_type_id to devices
now with add device_type_id to devices removed the database prefix
add the foreign key fo device type
Merge remote-tracking branch 'upstream/master'
now add manufacturer id to devices
now add fk_manufactures to devices
fixed broken populate
fixed broken populate
Merge pull request #7 from cococoder/master

removed the primary key and refactored the Rake file