no more npm install

Procfile

@@ -1 +1 @@
-web: bin/hubot -a hipchat
+web: yarn run start-hubot-hipchat

bin/hubot

@@ -1,8 +1,5 @@
 #!/bin/sh
 
 set -e
-
-npm install
 export PATH="node_modules/.bin:node_modules/hubot/node_modules/.bin:$PATH"
-
 exec node_modules/.bin/hubot --name "triatomic" "$@"

package.json

@@ -35,6 +35,6 @@
     "time": "^0.12.0"
   },
   "scripts": {
-    "meh": "hubot"
+    "start-hubot-hipchat": "hubot --name triatomic hipchat"
   }
 }