Add syntax highlighing for code snippets in README.md

README.md

@@ -43,7 +43,7 @@ your OS' package management app.
 
 ### Ubuntu
 
-```
+```bash
 sudo apt install partitionmanager
 ```
 
@@ -51,25 +51,25 @@ sudo apt install partitionmanager
 
 As the `root` user:
 
-```
+```bash
 apt install partitionmanager
 ```
 
 ### CentOS, Fedora, RHEL
 
-```
+```bash
 sudo yum install kde-partitionmanager
 ```
 
 ### OpenSUSE
-```
+```bash
 sudo zypper install partitionmanager
 ```
 
 ### ArchLinux
 
 1. Enable the community repository on `/etc/pacman.conf`:
-    ```
+    ```ini
     [community]
     Include = /etc/pacman.d/mirrorlist
     ```
@@ -79,7 +79,7 @@ sudo zypper install partitionmanager
     ```
 
 ### Gentoo
-```
+```bash
 sudo emerge partitionmanager
 ```