chore: add jimp dependency, icon padding script, and update configuration

node_modules/parse-headers/example.js

@@ -0,0 +1,11 @@
+var parse = require('./parse-headers')
+
+  , headers = [
+        'Date: Sun, 17 Aug 2014 16:24:52 GMT'
+      , 'Content-Type: text/html; charset=utf-8'
+      , 'Transfer-Encoding: chunked'
+      , 'X-Custom-Header: beep'
+      , 'X-Custom-Header: boop'
+    ].join('\n')
+
+console.log(parse(headers))