update readme

+# How to use package
+1. Add this code into composer.json of your project
+```
+"repositories": [
+     {
+         "type": "vcs",
+         "url": "git@gitlab.monotos.biz:pvduc/daito-utils.git"
+     }
+ ]
+```
+2. Run command to install package
+```
+# we use master branch
+# if has any changes it will request to last commit of Master branch default
+composer require pvduc/daito-utils:dev-master
+```
+
+#### **Note**:
+
+If package changes, to project updates new changes
+```
+composer update pvduc/daito-utils:dev-master
+```
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