Add pear modules, mail and net_smtp via composer (#93)

Add pear modules, mail and net_smtp via composer, remove php 5.6 build due to phpunit 6

lib/composer/vendor/dflydev/dot-access-data/composer.json

@@ -0,0 +1,38 @@
+{
+    "name": "dflydev/dot-access-data",
+    "type": "library",
+    "description": "Given a deep data structure, access data by dot notation.",
+    "homepage": "https://github.com/dflydev/dflydev-dot-access-data",
+    "keywords": ["dot", "access", "data", "notation"],
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Dragonfly Development Inc.",
+            "email": "info@dflydev.com",
+            "homepage": "http://dflydev.com"
+        },
+        {
+            "name": "Beau Simensen",
+            "email": "beau@dflydev.com",
+            "homepage": "http://beausimensen.com"
+        },
+        {
+            "name": "Carlos Frutos",
+            "email": "carlos@kiwing.it",
+            "homepage": "https://github.com/cfrutos"
+        }
+    ],
+    "require": {
+        "php": ">=5.3.2"
+    },
+    "autoload": {
+        "psr-0": {
+            "Dflydev\\DotAccessData": "src"
+        }
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "1.0-dev"
+        }
+    }
+}