Adding stuff we made at FrosCon

edited the help-file. clarification of Leveldesign-License.
info on how to run the game/install libs.
added a lightning-talk-level.
added pix for lightning-talk-level.

README.md

@@ -1,4 +1,4 @@
- Chaos Projectile - Run 'n' Gun meets RPG
+ Chaos Projectile - Run 'n' Gun meets RPG
 ==========================================
 
 Synopsis
@@ -40,5 +40,5 @@ Developers
 
 - Code by Anna Dorokhova is licensed under [GNU GPLv3](http://www.gnu.org/licenses/gpl-3.0.html)
 -  2D game art assets by Anna Dorokhova are licensed under [CC-BY-NC-SA 4.0](http://creativecommons.org/licenses/by-nc-sa/4.0/)
-- Leveldesign and balancing by Maik Helfrich (license for level-files clarification coming soon)
+- Leveldesign and balancing by Maik Helfrich  [GNU GPLv3](http://www.gnu.org/licenses/gpl-3.0.html)
 - Sound-files (working on it...)