Add basic console support.

Enables out of the box use of console with ZF2 apps (on *nix and Windows).
After cloning/extracting skeleton app, the `zf` command becomes available.

````console
> git clone https://github.com/zendframework/ZendSkeletonApplication.git
> cd ZendSkeletonApplication
> ./zf
Welcome to Zend Skeleton Application
Zend Framework version 2.0.3

Reason for failure: Invalid arguments or no arguments provided
````