Update README.md

README.md

@@ -57,6 +57,9 @@ Requirements
 ##### Ubuntu
 
     sudo apt-get install pkg-config libxcb1 libpam-dev libcairo-dev libxcb-xinerama0-dev libev-dev libx11-dev libx11-xcb-dev libxkbcommon0 libxkbcommon-x11-0 libxcb-dpms0-dev libxcb-image0-dev libxcb-util0-dev libxcb-xkb-dev libxkbcommon-x11-dev
+    
+##### Aur Package
+https://aur.archlinux.org/packages/i3lock-color-git
 
 Running i3lock
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