diff --git a/.ruby-gemset b/.ruby-gemset
new file mode 100644
index 0000000..90e2988
--- /dev/null
+++ b/.ruby-gemset
@@ -0,0 +1 @@
+promotion
diff --git a/.ruby-version b/.ruby-version
new file mode 100644
index 0000000..2aaf252
--- /dev/null
+++ b/.ruby-version
@@ -0,0 +1 @@
+ruby-1.9.3-p392