Switch to safecurl dev-master

Related #23

Changelogs summary

 - fin1te/safecurl updated from v1.1 to dev-master
   See changes: wkcaj/safecurl@v1.1...dev-master
   Release notes: https://github.com/fin1te/safecurl/releases/tag/dev-master

Author: j0k3r

composer.json

@@ -16,7 +16,7 @@
     "require": {
         "php": ">=5.4",
         "guzzlehttp/guzzle": "^5.2.0",
-        "fin1te/safecurl": "~1.1",
+        "fin1te/safecurl": "dev-master",
         "simplepie/simplepie": "^1.3.1",
         "j0k3r/php-readability": "^1.0",
         "htmlawed/htmlawed": "^1.1.19",