init_yandex_search: Initiate yandex search
In EvgenyPetrovsky/websearchr:

Function takes more or less stable parameters and returns another unified search function that takes 3 parameters: query, numner of results on page and page number

1 2	init_yandex_search(user_name, api_key, sort_by = c("rlv", "tm"), filter = c("none", "moderate", "strict"))

`user_name`	Yandex user
`api_key`	API key given to Yandex user
`sort_by`	Sort mode: `rlv` - relevance, `tm` time
`filter`	filter mode: `none`, `moderate` or `strict`