diff --git a/GravityDev3.pde b/GravityDev3.pde
index 6099e20..07030cd 100644
--- a/GravityDev3.pde
+++ b/GravityDev3.pde
@@ -1,3 +1,16 @@
+/*
+    GravityDev3
+    Third iteration of a 2D gravity simulator.     
+    by Nayan Sawyer
+    started Mar 2022
+    version 0.3.4 Mar 31 2022
+    
+    Features include clicking on a planet to lock onto it, center a focussed 
+    planet, and pan/zoom. Next version planned will be written in C++ for better 
+    acuracy and memory management, as this one has floating point imprecision 
+    issues, and Processing is not effecient with memory.
+
+*/
 
 PlanetManager pm; // Manages Planets
 Gui gui; // Contains and manages gui
diff --git a/mGui.pde b/mGui.pde
index 83d5706..1e03e7e 100644
--- a/mGui.pde
+++ b/mGui.pde
@@ -20,6 +20,7 @@ class Gui {
   }
 }
 
+//Center button
 class CButton extends Button{
   
   CButton(){
diff --git a/readme.md b/readme.md
new file mode 100644
index 0000000..3ba2363
--- /dev/null
+++ b/readme.md
@@ -0,0 +1,5 @@
+# GravityDev3
+Third iteration of a 2D gravity simulator. Features include clicking on a planet to lock onto it, center a focussed
+    planet, and pan/zoom. Next version planned will be written in C++ for better
+    acuracy and memory management, as this one has floating point imprecision
+    issues, and Processing is not effecient with memory.