Tweak language for #389.

Author: jlevy

README.md

@@ -561,7 +561,7 @@ These are items relevant *only* on OS X.
 - [Strict mode](http://redsymbol.net/articles/unofficial-bash-strict-mode/) for writing better shell scripts.
 - [shellcheck](https://github.com/koalaman/shellcheck): A shell script static analysis tool. Essentially, lint for bash/sh/zsh.
 - [Filenames and Pathnames in Shell](http://www.dwheeler.com/essays/filenames-in-shell.html): The sadly complex minutiae on how to handle filenames correctly in shell scripts.
-- [Data Science at the Command Line](http://datascienceatthecommandline.com/#tools): Creating Data Science pipelines within the commandline
+- [Data Science at the Command Line](http://datascienceatthecommandline.com/#tools): More commands and tools helpful for doing data science, from the book of the same name
 
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