added CL to curated

Author: seankross

curated.md

@@ -21,6 +21,7 @@ permalink: /curated/
 
 - [explainshell.com - match command-line arguments to their help text](http://explainshell.com/)
 - [The Command Line Crash Course - Quick course in using the command line](http://cli.learncodethehardway.org/book/)
+- [Mastering the command line, in one page](https://github.com/jlevy/the-art-of-command-line/blob/master/README.md)
 
 ### R
 

toolbox.md

@@ -7,7 +7,6 @@ permalink: /toolbox/
 ## Command Line
 
 - [Working with files in Bash](http://edgarsh.es/ins/working-with-files-in-bash/)
-- [Mastering the command line, in one page](https://github.com/jlevy/the-art-of-command-line/blob/master/README.md)
 
 ## Git/GitHub