Bump binary version to 0.20.0

I am Groot CI · I am Groot CI · commit 541d3f7b1cf7 · 2017-06-19T11:11:50.000Z
diff --git a/version.go b/version.go
@@ -1,3 +1,3 @@
 package main
 
-const version = "0.19.1"
+const version = "0.20.0"
