added composer to centos

installer.sh

@@ -70,6 +70,10 @@ cent(){
     echo -e "\nphp 7.3 installation completed.."
     echo -e "\nphp version: $(php -v)"
     sleep 1
+    #installing composer
+    curl -sS https://getcomposer.org/installer | php
+    mv composer.phar /usr/local/bin/composer
+    chmod +x /usr/local/bin/composer
     #installing mysql
     echo " "
     yum localinstall https://dev.mysql.com/get/mysql57-community-release-el7-9.noarch.rpm -y