122 spawn with script properties

[paweljarosz]

Example shows how to use factory with properties to change the initial script properties of created instances.

#122

[paweljarosz]

I updated the example @britzl :

It's now spawning different enemies with different properties (and bullets are also spawned, but bullet is without any property):

[britzl]

Some typos

[paweljarosz]

Thank you @britzl , fixed!