Minor updates.

diff --git a/readme.md b/readme.md
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+These are my Bash configuration files. I use them on Trisquel Linux and Mac OS X,
+but I see no reason why they would not work on other Unix-like systems.
+
+Code is licensed under the MIT License (included in the file "license.txt")
+unless otherwise licensed.
+
+Code is best viewed in a monospace font with line width set to 80 characters
+and tab stops set to 4 spaces.
+
+I hope you find my code useful and educational!
+
+Regards,
+David Kerkeslager

diff --git a/readme.txt b/readme.txt
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-These are my Bash configuration files. I use them on Xubuntu Linux and Mac OS X,
-but I see no reason why they would not work on other Unix-like systems.
-
-Code is licensed under the MIT License (included in the file "license.txt")
-unless otherwise licensed.
-
-Code is best viewed in a monospace font with line width set to 80 characters
-and tab stops set to 4 spaces.
-
-I hope you find my code useful and educational!
-
-Regards,
-David Kerkeslager