README edits

Author: mdsturtevant

Diff for: README.md

@@ -1,4 +1,20 @@
 Conway-s-Life-in-Python
 =======================
 
+TO RUN:
+    python3 pylifeGUI.py
+
+
 John Conway's famous cellular automation game "Life"
+
+The rules of Life are very simple. 
+You start with a rectangular array of cells. 
+Each cell is either “alive” (black) or “dead” (white). Initially, all cells are dead.
+
+Every cell has eight neighbors. To make a new generation, apply these rules to each cell:
+
+(a) If the cell is alive and has fewer than two or more than three living neighbors, the cell dies (from loneliness or overcrowding, respectively).
+
+(b) If the cell is dead and has exactly three living neighbors, the cell revives.
+
+