Update 'README.md'

README.md

 # First Saturday
 
-see [README.TXT](README.TXT).
+First weekend lab. Overall idea is to read the code, read the tests, and then write some code to pass all the tests.
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+**Be sure to Fork this repo, and `git clone` your own forked copy of this code.**
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+Be sure to commit all your changes multiple times as you're working on the lab.
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+`git commit -m "checkpointing my work"` should so. But change the message to meaningful to the work you're saving.
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+When you are finished, and are passing all the tests, be sure to do a final commit and then do a Pull Request so we can review your work.
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+
+
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+now see [README.TXT](README.TXT).