TBR: updating prova which uses a different way to delect the
browser-launcher config file

Change-Id: I528327ab24a14b80440ca5985f9411689d9970ee
diff --git a/package.json b/package.json
index 1709f2b..2a8a843 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
     "browserify": "^4.2.3",
     "exorcist": "^0.1.6",
     "jshint": "^2.6.0",
-    "prova": "git+https://github.com/aghassemi/prova#0.0.2",
+    "prova": "git+https://github.com/aghassemi/prova#0.0.4",
     "proxyquireify": "^0.5.0",
     "rework": "^1.0.1",
     "rework-import": "^1.2.1",