CSV file requirements

Comma separated file with 12 columns. 8 columns are required.

1	SKU - a unique Stock Keeping Unit. Synchronization is based on this param.	`string`
2	Product title.	`string`
3	Product URL on your website.	`string`
4	Price in USD. Without currency, only value.	`float`
5	Old price in USD. Without currency, only value.	`float`
6	Description. No `HTML` tags allowed.	`string`
7	Category 1.	`string`
8	Category 2.	`string`
9	Image 1.	`string`
10	Image 2.	`string`
11	Image 3.	`string`
12	Image 4.	`string`