version 0.6.1 changes

### Improvements
- APP_PATH added in order to run misto app rather than the app folder.
- getPath() method added to get installation folder for the Misto app.

### changes
- Autoload function revised for having custom classes for new app
supporting namespaced classes and the classic ones.
- settings.php file move to misto root from app folder.

### bugfixes
- fixed wrong plainHost detection