update composer dependency
add module: crud role

add features:
- manage role prmission
- notification option
fix bug

some deleted stock still affect adding new stock with duplicate flag
add feature

- discount in number and percentage
Create README.md
update gitignore
update readme
add time log on console
fix bug

deleted product still showed up as selection on sales transaction
Add some information on readme file
Update README.md
Update composer.json
Merge pull request #6 from nicklaros/development

merging to master