Yodas 1.3.1

1.3.1

Adding return variables to all functions.

1. Majorly reformatted README.md
2. Yoda.delete() now returns bool depending on whether the operation was successful or not.
3. Yoda.__setPath() now returns bool if successful
4. Yoda.write() returns bool
5. Menu.setExecute() returns bool
6. Menu.add() returns bool