Added JavaScript conformance tests.  All tests pass!
diff --git a/tests.sh b/tests.sh
index 981d20c..a89f6df 100755
--- a/tests.sh
+++ b/tests.sh
@@ -350,6 +350,7 @@
 build_javascript() {
   internal_build_cpp
   cd js && npm install && npm test && cd ..
+  cd conformance && make test_nodejs && cd ..
 }
 
 generate_php_test_proto() {