Add Deploy to Heroku button

README.md

@@ -19,6 +19,8 @@ There are two howto's:
 
 The first option is easier, and often less expensive. However, if you're running River4 on a service like Heroku, you can't rely on the local file system for persistent storage, so we built River4 to work with S3 as well. On Heroku, which runs in the Amazon cloud, access to S3 storage is free.
 
+[![Deploy](https://www.herokucdn.com/deploy/button.png)](https://heroku.com/deploy)
+
 
 #### Notes
 

app.json

@@ -0,0 +1,26 @@
+{
+  "name": "River4",
+  "website": "http://river4.smallpict.com/",
+  "description": "River of news aggregator that runs from Amazon S3",
+  "repository": "https://github.com/scripting/river4",
+  "logo": "https://raw.github.com/mrfabbri/river4/heroku-button/river4.png",
+  "env": {
+    "s3path": {
+      "description": "The path to the S3 bucket containing subscription list, rivers and data for the aggregator.",
+      "value": "/river.mydomain.com/"
+    },
+    "AWS_ACCESS_KEY_ID": {
+      "description": "The AWS Access Key ID for accessing the S3 bucket see http://bit.ly/1bIjDah for help.",
+      "value": ""
+    },
+    "AWS_SECRET_ACCESS_KEY": {
+      "description": "The AWS Secret Access Key for accessing the S3 bucket see http://bit.ly/1bIjDah for help.",
+      "value": ""
+    },
+    "AWS_REGION": {
+      "description": "The AWS Region where the S3 bucket is located, e.g. us-east-1",
+      "value": "us-east-1"
+    }
+  },
+  "keywords": ["rss", "syndication", "news", "river", "feed", "opml"]
+}