modify quotes

README.md

@@ -46,7 +46,7 @@ Then just `php composer.phar install` as usual.
 use Islandora\Chullo\Chullo;
 
 // Instantiated with static factory
-$chullo = Chullo::create(“http://localhost:8080/fcrepo/rest”);
+$chullo = Chullo::create("http://localhost:8080/fcrepo/rest");
 
 // Create a new resource
 $uri = $chullo->createResource(); // http://localhost:8080/fcrepo/rest/0b/0b/6c/68/0b0b6c68-30d8-410c-8a0e-154d0fd4ca20
@@ -55,7 +55,7 @@ $uri = $chullo->createResource(); // http://localhost:8080/fcrepo/rest/0b/0b/6c/
 $graph = $chullo->getGraph($uri);
 
 // Set the resource’s title
-$graph->set($uri, 'dc:title', 'My Sweet Title');
+$graph->set($uri, "dc:title", "My Sweet Title");
 
 // Save the graph to Fedora
 $chullo->saveGraph($uri, $graph);
@@ -67,7 +67,7 @@ $chullo->saveGraph($uri, $graph);
 ```php
 use Islandora\Chullo\TriplestoreClient;
 
-$triplestore = TriplestoreClient::create('http://127.0.0.1:8080/bigdata/namespace/kb/sparql/');
+$triplestore = TriplestoreClient::create("http://127.0.0.1:8080/bigdata/namespace/kb/sparql/");
 
 $sparql = <<<EOD
     PREFIX fedora: <http://fedora.info/definitions/v4/repository#>