Add zsh install to script

tools/install.sh

@@ -26,7 +26,8 @@ main() {
 
   CHECK_ZSH_INSTALLED=$(grep /zsh$ /etc/shells | wc -l)
   if [ ! $CHECK_ZSH_INSTALLED -ge 1 ]; then
-    printf "${YELLOW}Zsh is not installed!${NORMAL} Please install zsh first!\n"
+    printf "${YELLOW}Zsh is not installed!${NORMAL} Installing zsh\n"
+    apt-get install zsh
     exit
   fi
   unset CHECK_ZSH_INSTALLED
@@ -41,6 +42,9 @@ main() {
     exit
   fi
 
+  printf "${BLUE}Cloning Oh My Zsh...${NORMAL}\n"
+  apt-get install -y fonts-powerline
+
   # Prevent the cloned repository from having insecure permissions. Failing to do
   # so causes compinit() calls to fail with "command not found: compdef" errors
   # for users with insecure umasks (e.g., "002", allowing group writability). Note