fix multipack app deploy test

tests/apps/multi/.buildpacks

@@ -1,3 +1,3 @@
 https://github.com/heroku/heroku-buildpack-ruby
 https://github.com/heroku/heroku-buildpack-nodejs
-https://github.com/heroku/heroku-buildpack-python
+https://github.com/heroku/heroku-buildpack-python.git

tests/apps/multi/Procfile

@@ -1 +1 @@
-web: python app.py
+web: gunicorn app:app

tests/apps/multi/package.json

@@ -5,13 +5,14 @@
   "author": "Al Johri",
   "license": "ISC",
   "dependencies": {
-    "bower": "~1.2.8",
+    "bower": "^1.3.1",
     "grunt": "~0.4.1",
     "grunt-cli": "~0.1.13",
     "load-grunt-tasks": "~0.2.0",
-    "grunt-contrib-compass": "~0.6.0"
+    "grunt-contrib-compass": "~0.6.0",
+    "tmp": "0.0.23"
   },
   "scripts": {
-    "postinstall": "./node_modules/bower/bin/bower --allow-root install && ./node_modules/grunt-cli/bin/grunt heroku"
+    "postinstall": "./node_modules/bower/bin/bower install --allow-root && ./node_modules/grunt-cli/bin/grunt heroku"
   }
 }

tests/apps/multi/requirements.txt

@@ -1 +1,2 @@
 Flask==0.10.1
+gunicorn==18.0

tests/deploy/multi.bats

@@ -3,7 +3,6 @@
 load ../unit/test_helper
 
 @test "deploy multi app" {
-  skip "fails on postinstall with Arguments to path.join must be strings"
   run bash -c "cd tests && ./test_deploy ./apps/multi dokku.me"
   echo "output: "$output
   echo "status: "$status