fix support for experimental js syntax

plugins/c9.fs/mock/test_es6.js

@@ -50,7 +50,9 @@ q;
 
 class Blie {}
 
+@exported
 class Model extends Blie {
+  x = 1
   constructor(properties) {
     this.properties = properties;
   }
@@ -58,6 +60,12 @@ class Model extends Blie {
   toObject() {
     return this.properties;
   }
+  
+  @exported(1)
+  async f() {
+      this::exported();
+      ::myFun;
+  }
 }
 
 new Model();

plugins/c9.ide.language.javascript.eslint/packager/.gitignore

@@ -0,0 +1,2 @@
+acorn
+node_modules

plugins/c9.ide.language.javascript.eslint/packager/setup.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+set -euo pipefail
+
+cd `dirname $0`
+npm i
+if ! [ -d acorn/.git ]; then
+    git clone https://github.com/c9/acorn
+fi
+pushd acorn
+git fetch origin
+git reset origin/master --hard
+npm i
+npm run build
+popd
+
+cp acorn/dist/* node_modules/acorn/dist
+
+node eslint.js