Update README.md

Author: rmbernardi

README.md

@@ -1,5 +1,11 @@
-<h1>Tree Viewer</h1>
-This is a Tree viewer for JavaFX 12
+<h1>Parse Tree Viewer for JavaFX 12</h1>
+This is a Tree viewer for JavaFX 12 for viewing Parse Trees generated by the SMILES Parser.
 
-<h1>Compilation</h1>
-mvn clean compile package javafx:run
+<h2>Purpose</h2>
+This tool can be used to diagnose issues with a Parse Tree.  This is especially helpful with larger and more complex molecules.
+
+<h2>Usage</h2>
+Place a valid parse tree json file in your filesystem at the location specified in Line 287 of App.java. (Modify this URL to match your local machine)
+
+<h2>Compilation</h2>
+To run, enter this on the command line: mvn clean compile package javafx:run