Changed dependency from activerecord-mysql-adapter to activerecord-mysql2-adapter.
Enabled rake seed to reseed the data without having to run build_and_install.sh every time.
Merging with Alex's branch.
Restored .gitignore to include build.xml to ease merges with Alex's repo.
Added seeding for platforms, manufacturers, and device types.
Merge pull request #14 from draganglumac/master

Seeding platforms, manufacturers, and device types as well now.