Add "vendor" to gitignore
Load core classes wit hcomposer autoloader
Load custom tasks and commands by composer autoload mechanism
Remove old Autoload class
Revert "Remove old Autoload class"

This reverts commit 3f3253bbee3493c71e09a3074fd28a9d4485fc6c.
Use default autoloader when composer autoloader has been not initialized
Merge pull request #118 from edpauto/improved-autoloader

Autoloading classes with composer autoloader