Extra methods for qfs module
- incorporate with q wrapper: https://github.com/isaacs/rimraf https://github.com/substack/node-mkdirp
- copy file & dir
- multi-rename
- rename all in dir to pattern
- loop throu all files in dir / down the tree & process data with provided function
- various find methods (glob) https://github.com/isaacs/node-glob
Note: all above with Q promise