Firebase - GAS Library Installation

note: things have changed quite a bit in the look and layout since this was written, but the idea is the same

2.  A popup box opens. Insert the following project key in the textbox: 

MYeP8ZEEt1ylVDxS7uyg9plDOcoke7-2l

and click on the Select button next to it.

3. Click on the box listing the different versions of the library. Select the latest public release.

4. Click OK. You can now use this library.