Add examples/ directory (denoland/deno_std#28)

Previously https://github.com/denoland/deno_examples
Original: 14be9a0e82

examples/gist.ts

@@ -0,0 +1,63 @@
+#!/usr/bin/env deno --allow-net --allow-env
+
+import { args, env, exit, readFile } from "deno";
+import parseArgs from "https://deno.land/x/parseargs/index.ts";
+
+function pathBase(p: string): string {
+  const parts = p.split("/");
+  return parts[parts.length - 1];
+}
+
+async function main() {
+  const token = env()["GIST_TOKEN"];
+  if (!token) {
+    console.error("GIST_TOKEN environmental variable not set.");
+    console.error("Get a token here: https://github.com/settings/tokens");
+    exit(1);
+  }
+
+  const parsedArgs = parseArgs(args.slice(1));
+
+  if (parsedArgs._.length === 0) {
+    console.error(
+      "Usage: gist.ts --allow-env --allow-net [-t|--title Example] some_file [next_file]"
+    );
+    exit(1);
+  }
+
+  const files = {};
+  for (const filename of parsedArgs._) {
+    const base = pathBase(filename);
+    const content = await readFile(filename);
+    const contentStr = new TextDecoder().decode(content);
+    files[base] = { content: contentStr };
+  }
+
+  const content = {
+    description: parsedArgs.title || parsedArgs.t || "Example",
+    public: false,
+    files: files
+  };
+  const body = JSON.stringify(content);
+
+  const res = await fetch("https://api.github.com/gists", {
+    method: "POST",
+    headers: [
+      ["Content-Type", "application/json"],
+      ["User-Agent", "Deno-Gist"],
+      ["Authorization", "token " + token]
+    ],
+    body
+  });
+
+  if (res.ok) {
+    let resObj = await res.json();
+    console.log("Success");
+    console.log(resObj["html_url"]);
+  } else {
+    let err = await res.text();
+    console.error("Failure to POST", err);
+  }
+}
+
+main();