diff --git a/.rubocop.yml b/.rubocop.yml
new file mode 100644
index 0000000..14fb6ee
--- /dev/null
+++ b/.rubocop.yml
@@ -0,0 +1,4 @@
+inherit_from: .rubocop_todo.yml
+
+Style/Documentation:
+  Enabled: false
diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
new file mode 100644
index 0000000..4705069
--- /dev/null
+++ b/.rubocop_todo.yml
@@ -0,0 +1,7 @@
+# This configuration was generated by
+# `rubocop --auto-gen-config`
+# on 2015-10-04 18:16:18 -0400 using RuboCop version 0.34.2.
+# The point is for the user to remove these configuration records
+# one by one as the offenses are removed from the code base.
+# Note that changes in the inspected code, or installation of new
+# versions of RuboCop, may require this file to be generated again.
diff --git a/Gemfile b/Gemfile
index 40a7839..3b1403c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,8 +1,8 @@
 source 'https://rubygems.org'
 
-ruby '2.2.2' if ENV.key?('DYNO')
+ruby '2.2.3' if ENV.key?('DYNO')
 
 gem 'aws-sdk', '~> 2'
-gem 'pry', group: [:development, :test]
-gem 'puma'
+gem 'pry', group: %i(development test)
 gem 'rack'
+gem 'rubocop', group: %i(development test)
diff --git a/Gemfile.lock b/Gemfile.lock
index 318ce29..ecc0b5c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,6 +1,9 @@
 GEM
   remote: https://rubygems.org/
   specs:
+    ast (2.1.0)
+    astrolabe (1.3.1)
+      parser (~> 2.2)
     aws-sdk (2.1.20)
       aws-sdk-resources (= 2.1.20)
     aws-sdk-core (2.1.20)
@@ -12,12 +15,22 @@ GEM
       multi_json (~> 1.0)
     method_source (0.8.2)
     multi_json (1.11.2)
+    parser (2.2.2.6)
+      ast (>= 1.1, < 3.0)
+    powerpack (0.1.1)
     pry (0.10.1)
       coderay (~> 1.1.0)
       method_source (~> 0.8.1)
       slop (~> 3.4)
-    puma (2.13.4)
     rack (1.6.4)
+    rainbow (2.0.0)
+    rubocop (0.34.2)
+      astrolabe (~> 1.3)
+      parser (>= 2.2.2.5, < 3.0)
+      powerpack (~> 0.1)
+      rainbow (>= 1.99.1, < 3.0)
+      ruby-progressbar (~> 1.4)
+    ruby-progressbar (1.7.5)
     slop (3.6.0)
 
 PLATFORMS
@@ -26,8 +39,8 @@ PLATFORMS
 DEPENDENCIES
   aws-sdk (~> 2)
   pry
-  puma
   rack
+  rubocop
 
 BUNDLED WITH
    1.10.6
diff --git a/README.md b/README.md
index e307d24..8348a07 100644
--- a/README.md
+++ b/README.md
@@ -2,3 +2,20 @@
 
 Transforms [this](http://api.bls.gov/publicAPI/v2/timeseries/data/CUUSA210SA0)
 into [this](http://s3.amazonaws.com/meatballhat/cpi/current.csv) :tada:.
+
+## usage
+
+This is intended for use with Google Sheets via:
+
+```
+=IMPORTDATA("http://s3.amazonaws.com/meatballhat/cpi/current.csv")
+```
+
+## deployment
+
+A copy of this thing is deployed to Heroku with a Heroku Scheduler addon
+configured to run the following once daily:
+
+``` bash
+bundle exec ruby cpi_fetcher.rb | bundle exec ruby mini_s3put.rb
+```
diff --git a/config.ru b/config.ru
index c191bf4..62bc808 100644
--- a/config.ru
+++ b/config.ru
@@ -1 +1 @@
-run lambda { |env| [301, { 'Location' => ENV['CPI_FEED_URL'] }, []] }
+run ->(*) { [301, { 'Location' => ENV['CPI_FEED_URL'] }, []] }
diff --git a/cpi_fetcher.rb b/cpi_fetcher.rb
index c255a5a..d0ad966 100644
--- a/cpi_fetcher.rb
+++ b/cpi_fetcher.rb
@@ -31,3 +31,64 @@ if $PROGRAM_NAME == __FILE__
   puts CPIFetcher.new.cpi
   exit 0
 end
+
+__END__
+{
+  "status": "REQUEST_SUCCEEDED",
+  "responseTime": 36,
+  "message": [],
+  "Results": {
+    "series": [
+      {
+        "seriesID": "CUUSA210SA0",
+        "data": [
+          {
+            "year": "2015",
+            "period": "S01",
+            "periodName": "1st Half",
+            "value": "220.381",
+            "footnotes": [
+              {}
+            ]
+          },
+          {
+            "year": "2014",
+            "period": "S02",
+            "periodName": "2nd Half",
+            "value": "220.891",
+            "footnotes": [
+              {}
+            ]
+          },
+          {
+            "year": "2014",
+            "period": "S01",
+            "periodName": "1st Half",
+            "value": "220.352",
+            "footnotes": [
+              {}
+            ]
+          },
+          {
+            "year": "2013",
+            "period": "S02",
+            "periodName": "2nd Half",
+            "value": "217.983",
+            "footnotes": [
+              {}
+            ]
+          },
+          {
+            "year": "2013",
+            "period": "S01",
+            "periodName": "1st Half",
+            "value": "216.941",
+            "footnotes": [
+              {}
+            ]
+          }
+        ]
+      }
+    ]
+  }
+}
diff --git a/mini_s3put.rb b/mini_s3put.rb
index c74fb2f..6919fe9 100644
--- a/mini_s3put.rb
+++ b/mini_s3put.rb
@@ -1,12 +1,17 @@
 require 'aws-sdk'
 
-bucket = ENV.fetch('CPI_FEED_AWS_BUCKET')
-key = ARGV.first || ENV.fetch('CPI_FEED_AWS_KEY')
+def main
+  bucket = ENV.fetch('CPI_FEED_AWS_BUCKET')
+  key = ARGV.first || ENV.fetch('CPI_FEED_AWS_KEY')
 
-puts Aws::S3::Resource.new.bucket(bucket).object(key).put(
-  body: $stdin.read
-)
+  puts Aws::S3::Resource.new.bucket(bucket).object(key).put(
+    body: $stdin.read
+  )
 
-puts Aws::S3::Client.new.put_object_acl(
-  bucket: bucket, key: key, acl: 'public-read'
-)
+  puts Aws::S3::Client.new.put_object_acl(
+    bucket: bucket, key: key, acl: 'public-read'
+  )
+  0
+end
+
+exit(main) if $PROGRAM_NAME == __FILE__