Accessing gitignore. Lecture 39 Unity 3D

After setting up SoundTree and creating the gitignore file, I am unable to get this file to open so that I can paste in the github code that is in the resources tab. When I double click on the .gitignore file the Soundtree icon flashes up on the screen and then nothing else happens. I have followed Ben’s instructions and have gone through the video twice, but can only get as far as the screen shot attached and then I am stuck. Any help will be greatly appreciated.gitignore%20screenshot|690x322

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