Modify the content of README
Convert project to a maven project, add the hibernate tutorial code to test directory
change h2 db into file mode
add annotations to model classes
Minor modification
ignore db files
add a controller to control the products view
add guava library, and add DAO object
backup current version
modify the layout
modify the layout and start to write product table controller
modify the structure of Product, but still has some bugs
finish the product class and dao api
table column resize with product table view
modify the layout of new edit product view
modify the layout of edit product
add new product button for create new product
delete Color class
add key to some component
Add create time and update time column in product table view. Finish the draft version of ObservableProduct class.