Update docs

Author: Eugene Lebedev

docs/Install.md

@@ -2,13 +2,19 @@
 
 1. Install Chrome Web Driver
 
-   ArchLinux:
+   **RedHat/CentOS:**
+
+    ```shell
+    yum -y install chromedriver
+    ```
+
+    **ArchLinux:**
 
     ```shell
     paru -S chromedriver
     ```
 
-   For other OS check [official download page](https://chromedriver.chromium.org/downloads).
+    For other OS check [official download page](https://chromedriver.chromium.org/downloads).
 
 2. Install chrome
 
@@ -17,8 +23,14 @@
     ```shell
     paru -S google-chrome
     ```
-   
-3. Run chrome-driver
+ 
+3. Add permission:
+
+   ```shell
+   chmod +x spt
+   ```
+  
+4. Run chrome-driver
 
     ```shell
     $ chromedriver

docs/Usage.md

@@ -1,24 +1,46 @@
 # How to use
 
-## 1. Set permissions
+## 0. Prerequisites
+
+[Run chrome driver](docs/Install.md)
 
-1. [Install and run chrome driver](docs/Install.md)
+## 1. Set permissions
 
-2. Prepare XML file for import
+1. Prepare XML file for import
 
    Prepare `import.xml` file. You can override filename with `--xml-file` option.
 
-3. Prepare app config:
+2. Prepare app config:
 
     ```shell
     cp spt.yml-dist spt.yml
     ```
 
    Edit and put valid credentials, tokens, etc.
 
-4. Run:
+3. Run:
 
     ```shell
-    chmod +x spt
     ./spt set
     ```
+
+## 2. Get empty permissions
+
+Run:
+
+```shell
+./spt get-empty
+```
+
+Example output:
+
+```json
+[
+   {
+     "name": "i.petrov",
+     "login": "Ivan Petrov",
+     "client": "AppStore",
+     "category": "Frogs Ltd"
+   }
+]
+```