diagram and gitingmore update

.gitignore

@@ -1,6 +1,7 @@
 .venv/
 build/
 *.png
+*.svg
 *.so
 *.c
 skydome.c

diagram.d2

@@ -0,0 +1,24 @@
+direction: down
+
+Map Window: {
+    Choose Location
+}
+
+Map Window -> Options Window
+Options Window: {
+    Choose Environment
+    Optional :{
+        Choose Pressure
+        Choose Temperature
+        }
+}
+
+Options Window -> Image Window
+Image Window: {
+    Press "render"
+    Optional :{
+        Zoom In/Out
+        Change Rendering Mode
+        }
+}
+