watches all *.js files inside root and all subdirectories and sources a file to the repl once it changes access core module docs in the repl via the dox() function that is added to every core function, i.e. fs.readdir.dox() access user module readmes in the repl via the dox() function that is added to every module installed via npm, i.e. marked.dox() access function's highlighted source code, info