added getting started

Getting started.md

@@ -0,0 +1,45 @@
+# بسم الله الرحمن الرحيم
+
+
+## Installation
+
+> **Note:** Ghaymah CLI is currently supported only on **Linux**.
+
+To install the cli , run the following command:
+
+```bash
+curl -sSl https://cli.ghaymah.systems/install.sh | bash
+```
+
+## Authentication
+
+## Command completion
+
+### Step 1: Identify your shell
+
+Run
+
+```bash
+echo $SHELL
+```
+
+supported shells:
+Supported shells: **bash**, **zsh**, **fish**
+
+### Step 2: Generate the completion script
+
+For Bash, run:
+
+```bash
+gy completion bash >> ~/gy-completion.sh
+```
+
+### Step 3: Enable command completion
+
+Run
+
+```bash
+echo "source ~/gy-completion.sh" >> ~/.bashrc
+```
+
+Then restart your terminal