The purpose of this tutorial is to show how to import names and email addresses collected with the Email Sign Up app into Gmail. The .csv file created by the app is in a format recognized by Gmail and imports new names and addresses easily. Follow these steps once you have connected your Android device to your computer via a usb cable. (You can also read text only instructions from google.)
See below for step by step instructions with screen captures.

The drop down menu appears.

The contacts screen appears.

The import screen appears.

The file choose dialog box appears.

The import screen shows the path to the .csv file.

The names and email addresses of the new contacts have been imported into Gmail.

Congratulations! The names and email addresses have been imported into Gmail.