Added timeshift installation

default/install.sh

@@ -7,13 +7,19 @@ default_install() {
     sudo echo "neofetch" >> /home/*/.bashrc
 
     sudo snap install simplenote
-    sudo snap install timeshift
 
+    install_timeshift
     install_ulauncher
     install_chrome
     install_lsd
 }
 
+install_timeshift() {
+    sudo add-apt-repository -y ppa:teejee2008/ppa
+    sudo apt-get update -y
+    sudo apt-get install timeshift -y
+}
+
 install_ulauncher() {
     sudo add-apt-repository ppa:agornostal/ulauncher
     sudo apt-get update -y