Configured CodeClimate to skip analyzing rsa/_version*.py

These files contain old code which has been deprecated. Analysis is
useless as best, as those files will be removed soon anyway.
diff --git a/.codeclimate.yml b/.codeclimate.yml
new file mode 100644
index 0000000..14441ba
--- /dev/null
+++ b/.codeclimate.yml
@@ -0,0 +1,27 @@
+---
+engines:
+  duplication:
+    enabled: true
+    config:
+      languages:
+      - ruby
+      - javascript
+      - python
+      - php
+  fixme:
+    enabled: true
+  radon:
+    enabled: true
+ratings:
+  paths:
+  - "**.inc"
+  - "**.js"
+  - "**.jsx"
+  - "**.module"
+  - "**.php"
+  - "**.py"
+  - "**.rb"
+exclude_paths:
+- tests/**/*
+- rsa/_version*.py
+