Head API added. Opt renamed to Options. Tests updated. More documentation added.

export.go

@@ -10,6 +10,7 @@ import (
 var file *os.File
 var once sync.Once
 
+// Export exports response data as JSON streaming file
 func Export(response *Response) {
 	once.Do(func() {
 		newFile, err := os.OpenFile("out.json", os.O_RDWR|os.O_CREATE|os.O_APPEND, 0666)