From GMail select Contacts. Then select the More dropdown, and import.
Select the csv file you created and import it. GMail will create a group called Imported followed by the date. Select the group and you should see your contacts. Again select the More drop down and rename the group.
If you have problems importing the csv file you may have to edit the file. Here are the instructions for that process. https://support.google.com/mail/answer/12119