refactor: use async/await (itgalaxy#182)

Author: evilebottnawi

Diff for: README.md

@@ -206,7 +206,7 @@ The CLI can exit the process with the following exit codes:
 - [svg2ttf](https://github.com/fontello/svg2ttf) - Converts SVG fonts to TTF format.
 - [ttf2eot](https://github.com/fontello/ttf2eot) - Converts TTF fonts to EOT format.
 - [ttf2woff](https://github.com/fontello/ttf2woff) - Converts TTF fonts to WOFF format.
-- [ttf2woff2](https://github.com/nfroidure/ttf2woff2) - Converts TTF fonts to WOFF2.
+- [wawoff2](https://github.com/fontello/wawoff2) - Converts TTF fonts to WOFF2 and versa vice.
 
 ## Roadmap
 

Diff for: package-lock.json

@@ -82,7 +82,7 @@
     "eslint-plugin-jest": "^22.4.1",
     "eslint-plugin-jsx-a11y": "^6.0.0",
     "eslint-plugin-lodash": "^5.1.0",
-    "eslint-plugin-markdown": "^1.0.0-rc.1",
+    "eslint-plugin-markdown": "^1.0.0",
     "eslint-plugin-node": "^8.0.1",
     "eslint-plugin-promise": "^4.1.1",
     "eslint-plugin-react": "^7.1.0",

Diff for: package.json

@@ -11,9 +11,11 @@ const fixturesGlob = "src/__tests__/fixtures";
 
 describe("standalone", () => {
   it("should throw error if `files` not passed", async () => {
-    await expect(() => standalone()).toThrow(
-      "You must pass webfont a `files` glob"
-    );
+    try {
+      await standalone();
+    } catch (error) {
+      expect(error.message).toMatch("You must pass webfont a `files` glob");
+    }
   });
 
   it("should throw error `files glob patterns specified did not match any files` if not found files", async () => {

Diff for: src/__tests__/standalone.test.js

@@ -342,12 +342,11 @@ if (cli.flags.version || cli.flags.v) {
 }
 
 Promise.resolve()
-  .then(() =>
-    Object.assign({}, optionsBase, {
+  .then(() => {
+    const options = Object.assign({}, optionsBase, {
       files: cli.input
-    })
-  )
-  .then(options => {
+    });
+
     if (options.files.length === 0) {
       cli.showHelp();
     }