Remove zsh dependency

install_zsh.sh

@@ -7,7 +7,7 @@ function showcom()
 }
 
 # Check if necessary things are installed
-if [ ! command -v git &> /dev/null ] || [ ! command -v zsh &> /dev/null ]; then
+if [ ! command -v git &> /dev/null ]; then
     echo "This script requires git and zsh"
     exit 1
 fi