fix version compare

Author: Ivan Dudarev

composer.json

@@ -1,6 +1,6 @@
 {
   "name": "ddrv/iptool",
-  "version":"1.0.9",
+  "version":"1.0.10",
   "type": "library",
   "description": "Define data by IP Address",
   "keywords": ["iptool", "ip", "geo", "geoip", "info", "data", "ip-database", "search", "ip-search"],
@@ -13,10 +13,10 @@
     }
   ],
   "require":{
-    "php":"^5.3"
+    "php":">=5.3"
   },
   "require-dev":{
-    "phpunit/phpunit":"^5.1"
+    "phpunit/phpunit":">=5.1"
   },
   "suggest": {
     "ext-pdo_sqlite": "Need for Convertor"