fix: Enable dynamicImport plugin to support import() syntax (#903)

Fixes #902

Author: tmcw

Diff for: __tests__/fixture/es6-import.input.js

@@ -2,6 +2,8 @@ import hasEx6 from './es6-ext';
 import multiply from './simple.input.js';
 import * as foo from 'some-other-module';
 
+import('./simple.input.js').then(() => {});
+
 /**
  * This function returns the number one.
  * @returns {Number} numberone

Diff for: src/parsers/parse_to_ast.js

@@ -6,20 +6,18 @@ var opts = {
   allowImportExportEverywhere: true,
   sourceType: 'module',
   plugins: [
-    'jsx',
-    'flow',
-    'asyncFunctions',
+    'asyncGenerators',
     'classConstructorCall',
-    'doExpressions',
-    'trailingFunctionCommas',
-    'objectRestSpread',
-    'decorators',
     'classProperties',
+    'decorators',
+    'doExpressions',
     'exportExtensions',
-    'exponentiationOperator',
-    'asyncGenerators',
+    'flow',
     'functionBind',
-    'functionSent'
+    'functionSent',
+    'jsx',
+    'objectRestSpread',
+    'dynamicImport'
   ]
 };