diff --git a/README.md b/README.md
index e8b25f5..1899356 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,11 @@
 # usage
 
+# available implementations
+
+* [javascript](dist/xrfragment.js)
+* [python](dist/xrfragment.py)
+* [lua](dist/xrfragment.lua)
+
 # docs
 
 * [RFC](doc/RFC.md)
@@ -8,6 +14,5 @@
 
 ```
 $ ./make install
-$ ./make
-$ ./make runtest
+$ ./make && ./make runtest
 ```