Fix namespace in composer file, add readme + test file

Corelibs -> CoreLibs

test/ folder for test files (future phpunit test)

ReadMe.md

@@ -0,0 +1,23 @@
+# Composer package from CoreLibs
+
+This is just the lib/CoreLibs folder in a composer package.
+
+For local install only
+
+## Setup
+
+In the composer.json file add the following
+
+```json
+{
+    "repositories": [
+        {
+            "type": "vcs",
+            "url": "https://git.egplusww.jp/Composer/CoreLibs-Composer-All"
+        }
+    ],
+    "require": {
+        "egrajp/corelibs-composer-all": "@dev"
+    }
+}
+```