Default display-name's acceptTranspilerName to true

This was a change that has been queued for v4.

Addresses jsx-eslint#436

Author: lencioni

docs/rules/display-name.md

@@ -35,7 +35,7 @@ var Hello = React.createClass({
 
 ### `acceptTranspilerName`
 
-When `true` the rule will accept the name set by the transpiler and does not require a `displayName` property in this case.
+When `true` (default) the rule will accept the name set by the transpiler and does not require a `displayName` property in this case.
 
 The following patterns are considered okay and do not cause warnings:
 

lib/rules/display-name.js

@@ -14,7 +14,9 @@ module.exports = Components.detect(function(context, components, utils) {
 
   var sourceCode = context.getSourceCode();
   var config = context.options[0] || {};
-  var acceptTranspilerName = config.acceptTranspilerName || false;
+  var acceptTranspilerName = config.hasOwnProperty('acceptTranspilerName') ?
+    config.acceptTranspilerName :
+    true;
 
   var MISSING_MESSAGE = 'Component definition is missing display name';