Fix gist example.

clayreimann · web-flow · commit 44a6aa6576ba · 2016-08-31T19:43:44.000-05:00
Closes github-tools#374
diff --git a/README.md b/README.md
@@ -57,7 +57,7 @@ gist.create({
    description: 'My first gist',
    files: {
       "file1.txt": {
-         contents: "Aren't gists great!"
+         content: "Aren't gists great!"
       }
    }
 }).then(function({data}) {
