diff --git a/folly/experimental/exception_tracer/README b/folly/experimental/exception_tracer/README.md
similarity index 100%
rename from folly/experimental/exception_tracer/README
rename to folly/experimental/exception_tracer/README.md
diff --git a/folly/wangle/rx/README b/folly/wangle/rx/README.md
similarity index 99%
rename from folly/wangle/rx/README
rename to folly/wangle/rx/README.md
index ee170f3..0f7f697 100644
--- a/folly/wangle/rx/README
+++ b/folly/wangle/rx/README.md
@@ -4,12 +4,12 @@ RxJava for JVM languages.
 
 It is basically the plural of Futures (a la Wangle).
 
-
+```
                     singular              |            plural
         +---------------------------------+-----------------------------------
   sync  |  Foo getData()                  |  std::vector<Foo> getData()
   async |  wangle::Future<Foo> getData()  |  wangle::Observable<Foo> getData()
-
+```
 
 For more on Rx, I recommend these resources: