Restructure, rename, modularize.

Change-Id: I4aa6cfb486fe002cf65405ec9c2876e3114aaf46
diff --git a/.gitignore b/.gitignore
index 887007b..0390997 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,6 +3,8 @@
 build/
 target/
 
+.envrc
+
 *~
 *.class
 *.iml