add missing required file
make sales and purchase process easier
some enhancement
add module: crud role

added features:
- manage role's permission
- notification's option
gui enhancement
repair sluggish performance on sales transaction
repair sluggish performance on purchase transaction

plus some bug fix
fix bug

- detail purchase missing the store
- the hint placement in edit purchase
add feature

- discount in number and percentage

fix bug
- removed goods from sales detail still printed on nota
fix bug

can not print credits nota caused by missing required use class
Refining POS Coding Standar
update readme

bantu ya kira2 informasinya yang kurang apa aja
update readme
update readme
pos.sql
fix Logout issue - issue #6
update readme
Add some information on readme file
Add some information on readme file
Update Readme.md