Change text of three episodes to replace 'master' with 'main' #101
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Just taught this lesson and thought I would submit this right away! This replaces all text instances where the word "master" needed to be changed to "main" to reflect new git standards. I did not change the image in episode 2 (described in issue #99 ) as I was not sure what the best solution was. Happy to work on that too but thought it might best be handled separately.