adds example for Krastorio2

Author: Christian Neugum

examples/krastorio2/README.md

@@ -0,0 +1,74 @@
+# Krastorio2
+
+The [Krastorio2](https://mods.factorio.com/mod/Krastorio2) mod requires the `map_gen_settings.autoplace_controls` to be populated in order to start a new game. You can find the Factorio defaults below.
+
+If those settings aren't set the game will fail to start with the following error during map generation:
+```bash
+   0.857 Factorio initialised
+   0.857 Info Main.cpp:777: Creating new map /factorio/saves/replaceMe.zip
+   2.076 Loading level.dat: 1608873 bytes.
+   2.076 Info Scenario.cpp:204: Map version 1.1.100-0
+   2.112 Checksum for script /factorio/temp/currently-playing/control.lua: 3702463597
+   2.120 Checksum for script __Krastorio2__/control.lua: 2424813832
+Error: The mod Krastorio 2 (1.3.23) caused a non-recoverable error.
+Please report this error to the mod author.
+
+Error while running event Krastorio2::on_init()
+__Krastorio2__/scripts/freeplay.lua:52: attempt to index field 'autoplace_controls' (a nil value)
+stack traceback:
+	__Krastorio2__/scripts/freeplay.lua:52: in function 'add_to_crash_site'
+	__Krastorio2__/scripts/migrations.lua:23: in function 'generic'
+	__Krastorio2__/control.lua:54: in function <__Krastorio2__/control.lua:37>
+   2.172 Goodbye
+
+```
+
+## Minimal mod list
+
+```yaml
+mods:
+  enabled: true
+  portal:
+    - Krastorio2
+    - Krastorio2Assets
+    - flib
+```
+
+## Minimal other settings
+
+```yaml
+map_gen_settings:
+  autoplace_controls:
+    coal:
+      frequency: 1
+      size: 1
+      richness: 1
+    stone:
+      frequency: 1
+      size: 1
+      richness: 1
+    copper-ore:
+      frequency: 1
+      size: 1
+      richness: 1
+    iron-ore:
+      frequency: 1
+      size: 1
+      richness: 1
+    uranium-ore:
+      frequency: 1
+      size: 1
+      richness: 1
+    crude-oil:
+      frequency: 1
+      size: 1
+      richness: 1
+    trees:
+      frequency: 1
+      size: 1
+      richness: 1
+    enemy-base:
+      frequency: 1
+      size: 1
+      richness: 1
+```