Add TODO

TODO.md

@@ -0,0 +1,12 @@
+# Todo
+
+- Update all texts with polite ones
+- Achievements (at least alert only)
+- Question mark before discovery
+- Tease for additional upgrades/workers/research
+- Wikipedia/additional info about everything
+- More feedback
+    - Money change indicators (+ green / - red)
+    - Detector feedback for workers
+- Detector upgrade
+- Change hire to be over whole item?