update tests for latest AVA version

package.json

@@ -13,7 +13,7 @@
     "node": ">=0.10.0"
   },
   "scripts": {
-    "test": "node test.js"
+    "test": "ava"
   },
   "files": [
     "index.js"
@@ -32,6 +32,6 @@
     "strip"
   ],
   "devDependencies": {
-    "ava": "0.0.4"
+    "ava": "*"
   }
 }

test.js

@@ -1,8 +1,6 @@
-'use strict';
-var test = require('ava');
-var condenseWhitespace = require('./');
+import test from 'ava';
+import m from './';
 
-test(function (t) {
-	t.assert(condenseWhitespace('  foo bar     baz ') === 'foo bar baz');
-	t.end();
+test(t => {
+	t.is(m('  foo bar     baz '), 'foo bar baz');
 });