[BoyScout] Improve install from source documentation

Try to make the git module dependency on CommandLineKit stand out more
in the readme file.

Author: jeantil

README.md

@@ -32,7 +32,7 @@ launchctl load ~/Library/LaunchAgents/eu.byjean.autokbisw.plist
 
 ### From Source
 
-Clone this repository (using --recursive to init the CommandLineKit submodule), 
+Clone this repository (using `--recursive` to init the CommandLineKit submodule), 
 then make sure you have xcode installed and run the following command :
 ```
 xcodebuild -target autokbisw