rb: Use Echoe to manage the gem [THRIFT-38]

From kevin@rapleaf.com


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@670982 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/rb/CHANGELOG b/lib/rb/CHANGELOG
new file mode 100644
index 0000000..b5dce2a
--- /dev/null
+++ b/lib/rb/CHANGELOG
@@ -0,0 +1 @@
+v0.0.1. Initial release