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

node_modules/parse-headers/parse-headers.js

@@ -0,0 +1,32 @@
+var trim = function(string) {
+  return string.replace(/^\s+|\s+$/g, '');
+}
+  , isArray = function(arg) {
+      return Object.prototype.toString.call(arg) === '[object Array]';
+    }
+
+module.exports = function (headers) {
+  if (!headers)
+    return {}
+
+  var result = Object.create(null);
+
+  var headersArr = trim(headers).split('\n')
+
+  for (var i = 0; i < headersArr.length; i++) {
+    var row = headersArr[i]
+    var index = row.indexOf(':')
+    , key = trim(row.slice(0, index)).toLowerCase()
+    , value = trim(row.slice(index + 1))
+
+    if (typeof(result[key]) === 'undefined') {
+      result[key] = value
+    } else if (isArray(result[key])) {
+      result[key].push(value)
+    } else {
+      result[key] = [ result[key], value ]
+    }
+  }
+
+  return result
+}