Update 'README.md'

README.md

@@ -86,6 +86,7 @@ ___
 - [Harmonic number](https://en.wikipedia.org/wiki/Harmonic_number)
 - [Jaap's Puzzle Page](https://www.jaapsch.net/puzzles/)
 - [Rice's Theorem](https://en.wikipedia.org/wiki/Rice%27s_theorem)
+- [Seven habits of effective text editing - Bram Moolenaar](https://www.moolenaar.net/habits.html)
 
 ## [Mathematics and Theoretical Computer Science](mathematics.md)
 - [OEIS: The Online Encyclopedia of Integer Sequences](https://oeis.org/)