Merge pull request #24 from corporealshift/update-phpoption

Update phpoption to 1.6 to support new filter methods

Author: dstevenson

composer.json

@@ -12,11 +12,17 @@
             "homepage": "https://github.com/drslump/Protobuf-PHP"
         }
     ],
+    "repositories": [
+        {
+            "type": "git",
+            "url":  "https://github.com/centraldesktop/php-option.git"
+        }
+    ],
     "bin"        : ["protoc-gen-php.bat", "protoc-gen-php.php"],
     "require"    : {
         "php"                : ">=5.5.0",
         "ext-mbstring"       : "*",
-        "phpoption/phpoption": "1.5.*",
+        "phpoption/phpoption": ">=1.6.0",
         "symfony/console"    : "2.*"
     },
     "require-dev": {