Improve readme

README.md

@@ -1,7 +1,10 @@
 # Isdayoff
 
-Requests for [Isdayoff API](https://isdayoff.ru/)
+Requests client for [Isdayoff API](https://isdayoff.ru/)
 
+## Requirements
+
+Go 1.13+
 ## Install
 
 Make sure your project is using Go Modules (it will have a `go.mod` file in its
@@ -22,14 +25,36 @@ import (
 Run any of the normal `go` commands (`build`/`install`/`test`). The Go
 toolchain will resolve and fetch module automatically.
 
-Alternatively, you can also explicitly `go get` the package into a project:
+Alternatively, you can also explicitly `go get` the package:
 
 ```
 go get -u github.com/anatoliyfedorenko/isdayoff
 ```
 
+## Example
+
+```go
+package main
+
+import (
+	"fmt"
+	"github.com/anatoliyfedorenko/isdayoff"
+)
+
+func main() {
+	dayOff := isdayoff.New()
+	countryCode := CountryCodeKazakhstan
+	pre := false
+	covid := false
+	day, err := dayOff.Tomorrow(Params{
+		CountryCode: &countryCode,
+		Pre:         &pre,
+		Covid:       &covid,
+	})    
+
+	fmt.Println(day) // 0
+}
+```
+
 ## Note: 
 - TZ names should be taken from [IANA](https://en.wikipedia.org/wiki/List_of_tz_database_time_zones#List)
-
-## TODO: 
-- Add examples

isdayoff.go

@@ -158,7 +158,7 @@ func (c *Client) aliasRequest(alias string, params Params) (*DayType, error) {
 
 	req.URL.RawQuery = q.Encode()
 
-	req.Header.Set("User-Agent", "isdayoff-golang-lib/1.0.0 (https://github.com/anatoliyfedorenko)")
+	req.Header.Set("User-Agent", "isdayoff-golang-lib/1.0.2 (https://github.com/anatoliyfedorenko)")
 
 	res, err := c.httpClient.Do(req)
 	if err != nil {