Update wp cli (#23)

* Ensures wp-cli is updated to latest version

* stop wp-cli sending email at end of WP installation (which fails because no MTA is installed)

wp/install-wp.sh

@@ -1,6 +1,5 @@
 #!/usr/bin/env bash
 
-
 if $install_wordpress ; then
 
   echo "**** installing WP $wp_version"
@@ -39,7 +38,8 @@ PHP
 									--admin_user=$wp_admin_user \
 									--admin_password=$wp_admin_password \
 									--admin_email=$wp_admin_email \
-									--title="$wp_site_title"
+									--title="$wp_site_title" \
+									--skip-email
 
 
 fi

wp/wp-cli.sh

@@ -1,11 +1,9 @@
 #!/usr/bin/env bash
 
-
-if [ ! -f /usr/local/bin/wp ]; then
-  echo "**** installing wp-cli"
-  curl  https://raw.githubusercontent.com/wp-cli/builds/gh-pages/phar/wp-cli-nightly.phar -o /tmp/wp-cli.phar
-  chmod +x /tmp/wp-cli.phar
-  sudo mv /tmp/wp-cli.phar /usr/local/bin/wp
+# update wp-cli
+if [  -f /usr/local/bin/wp ]; then
+  echo "**** updating wp-cli"
+  sudo wp cli update --allow-root --yes
 fi
 
 wpcli_defaults_folder='/home/vagrant/.wp-cli'