Update Documents.

Author: saturneric

README.md

@@ -90,52 +90,40 @@ awesome operations.
 
 1. [Download](https://gnupg.org/ftp/gcrypt/binary/gnupg-w32-2.3.1_20210420.exe) gnupg-w32-******.exe
 2. Double Click it to install it
-3. [Download](https://github.com/saturneric/GpgFrontend/releases) GpgFrontend Windows Edition
+3. [Download GpgFrontend](https://github.com/saturneric/GpgFrontend/releases)  Windows Edition from release
 4. Unzip gpgfrontend-windows-latest-*******.zip
-5. Go into the directory and double click gpgfrontend.exe
+5. Go into the directory and double click GpgFrontend.exe
 
 #### macOS
 
-1. Install Homebrew [Here](https://brew.sh/) if you don't know it.
-2. Install gnupg
-    ```shell
-    % brew update
-    % brew install gnupg qt@5 gpgme
-    ```
-3. [Download](https://github.com/saturneric/GpgFrontend/releases) GpgFrontend macOS Edition
-4. Unzip GpgFrontend
-5. Get into folder and Give gpgfrontend permission to execute
-    ```shell
-    % cd gpgfrontend-macos-latest-*******/
-    % chmod u+x gpgfrontend
-    ```
-6. Just run it
-    ```shell
-    % ./gpgfrontend
-    ```
+1. [Download GpgFrontend](https://github.com/saturneric/GpgFrontend/releases) macOS edition from release
+2. Double-Click GpgFrontend.dmg to load it
+3. Double click and run it
+   (due to macOS security policy, you may need a little more step).
+4. If it satisfies you, you can drag it into your Application folder.
 
 #### Debian/Ubuntu/CentOS
 
 1. Install gnupg
     - For Debian/Ubuntu
        ```shell
        $ sudo apt update
-       $ sudo apt install gpg libgpgme11 qt-default
+       $ sudo apt install gpg qt-default
        ```
     - For CentOS
        ```shell
-       $ sudo yum install gnupg gpgme qt5-qtbase
+       $ sudo yum install gnupg qt5-qtbase
        ```
-2. [Download](https://github.com/saturneric/GpgFrontend/releases) GpgFrontend Linux Edition
-3. Unzip GpgFrontend
+2. [Download GpgFrontend](https://github.com/saturneric/GpgFrontend/releases) Linux edition from release
+3. Unzip gpgfrontend-ubuntu-latest-*******.zip
 4. Get into folder and Give gpgfrontend permission to execute
     ```shell
     $ cd gpgfrontend-ubuntu-latest-*******/
-    $ chmod u+x gpgfrontend
+    $ chmod u+x GpgFrontend
     ```
 5. Just run it
     ```shell
-    $ ./gpgfrontend
+    $ ./GpgFrontend
     ```
 
 ## Document