Few suggestions

README.md

@@ -59,19 +59,19 @@ const anvilClient = new Anvil({ apiKey })
 
 Fills a PDF with your JSON data.
 
-First, you will need to have uploaded a PDF to Anvil. On the `API Info` tab of your PDF template's page, you you find the PDF template's eid:
+First, you will need to have uploaded a PDF to Anvil. You can find the PDF template's eid on the `API Info` tab of your PDF template's page:
 
 <img width="725" alt="pdf-template-id" src="https://user-images.githubusercontent.com/69169/73583957-d8dec180-4449-11ea-9ea3-d426677cb881.png">
 
-An example
+An example:
 
 ```js
 const eid = 'kA6Da9CuGqUtc6QiBDRR'
 // Your API key from your Anvil organization settings
 const apiKey = '7j2JuUWmN4fGjBxsCltWaybHOEy3UEtt'
 
 // JSON data to fill the PDF
-const exampleData = {
+const payload = {
   "title": "My PDF Title",
   "fontSize": 10,
   "textColor": "#CC0000",
@@ -80,7 +80,7 @@ const exampleData = {
   }
 }
 const anvilClient = new Anvil({ apiKey })
-const { statusCode, data } = await anvilClient.fillPDF(eid, exampleData)
+const { statusCode, data } = await anvilClient.fillPDF(eid, payload)
 ```
 
 * `pdfTemplateEID` (String) - The eid of your PDF template from the Anvil UI

example/script/fill-pdf.js

@@ -27,7 +27,7 @@ import { run } from './env'
 import Anvil from '../../src/index'
 
 const argv = require('yargs')
-  .usage('Usage: $0 [-e local|staging|production] castEid token jsonPath.json')
+  .usage('Usage: $0 [-e local|production] castEid token jsonPath.json')
   .alias('e', 'endpoint')
   .demandCommand(3).argv
 
@@ -42,16 +42,14 @@ const baseURL = endpoints[endpointKey || 'production']
 const exampleData = JSON.parse(fs.readFileSync(jsonPath, { encoding: 'utf8' }))
 
 async function main () {
-  const client = new Anvil({
-    baseURL,
-    apiKey,
-  })
+  const client = new Anvil({ baseURL, apiKey })
 
   const { statusCode, data } = await client.fillPDF(eid, exampleData)
 
   if (statusCode === 200) {
     const testDir = __dirname
-    fs.writeFileSync(path.join(testDir, 'fill.output.pdf'), data, { encoding: null })
+    const outputFilePath = path.join(testDir, 'fill.output.pdf')
+    fs.writeFileSync(outputFilePath, data, { encoding: null })
   } else {
     console.log(statusCode, JSON.stringify(data, null, 2))
   }