Add newRequest function with common headers

trends.go

@@ -1,8 +1,6 @@
 package twitterscraper
 
 import (
-	"net/http"
-
 	"github.com/PuerkitoBio/goquery"
 )
 
@@ -10,7 +8,7 @@ const trendsURL = "https://twitter.com/i/trends"
 
 // GetTrends return list of trends.
 func GetTrends() ([]string, error) {
-	req, err := http.NewRequest("GET", trendsURL, nil)
+	req, err := newRequest(trendsURL)
 	if err != nil {
 		return nil, err
 	}