New template: example (very simple working game). 

There are a few new features here:

* When creating a project you can now specify what kind of game to create. (very limited at the moment) Each game type is functional and listed below:
  * **minimal**: The generator will copy the files required to get the server running.
  * **example**: A simple game where you may control a character, also the server moves a tree around randomly.

* When creating a project you can specify **--development** which will instead of copying files will sym-link them so editing within your project will edit the versioned files within impact-crater-core. *Makes development easier for me, if there is a better way to do this, please let me know.*

* Updated the README to include the new features as well as streamline the installation process.