Update composer and replace libs

Author: webnstack

composer.json

@@ -1,5 +1,5 @@
 {
-    "name": "tcesarpinho/php-sigep",
+    "name": "webnstack/php-sigep",
     "version": "0.0.1",
     "type": "library",
     "description": "Integração com Web Service do Correios. Gera etiquetas, consulta preços e prazos, imprime etiquetas e PLP, etc.",
@@ -14,6 +14,9 @@
         "php": ">=5.1.0",
         "tcesarpinho/php-sigep-fpdf": ">=0.0.1"
     },
+    "replace": {
+        "tcesarpinho/php-sigep": ">=0.0.1"
+    },
     "autoload": {
         "psr-0": {
             "PhpSigep": "src/"