Restore stable deps in composer and clean up deployment script

Author: Rachel

Vagrantfile

@@ -27,7 +27,6 @@ Vagrant.configure("2") do |config|
   config.ssh.insert_key = false
 
   config.vm.provision :shell, inline: <<SCRIPT
-  sed -i 's/^mesg n$/tty -s \&\& mesg n/g' /root/.profile
   set -ex
   phantomjs --webdriver=8643 &> /dev/null &
   su vagrant -c 'cd #{path} && composer install && bundle && npm install;

composer.json

@@ -1,25 +1,25 @@
 {
-  "name": "pantheon-systems/documentation",
-  "description": "Documentation for Pantheon",
-  "keywords": ["pantheon", "drupal", "wordpress"],
-  "homepage": "https://pantheon.io/docs/",
-  "type": "project",
-  "license": "CC-BY-4.0",
-  "minimum-stability": "dev",
-  "prefer-stable": true,
-  "require-dev": {
-      "drush/drush": "6.2.0",
-      "sculpin/sculpin": "2.*@dev",
-      "behat/behat": "3.0.*@stable",
-      "behat/mink": "1.6.*@stable",
-      "behat/mink-extension": "2.0.*@stable",
-      "behat/mink-goutte-driver": "1.1.*@stable",
-      "behat/mink-selenium2-driver": "1.2",
-      "composer/composer": "^1.0@alpha",
-      "pantheon-systems/terminus": "dev-master",
-      "dflydev/embedded-composer": "^1.0@dev"
-  },
-  "config": {
-      "bin-dir": "bin"
-  }
+    "name": "pantheon-systems/documentation",
+    "description": "Documentation for Pantheon",
+    "keywords": ["pantheon", "drupal", "wordpress"],
+    "homepage": "https://pantheon.io/docs/",
+    "type": "project",
+    "license": "CC-BY-4.0",
+    "minimum-stability": "dev",
+    "require-dev": {
+        "drush/drush": "6.2.0",
+        "sculpin/sculpin": "2.*@dev",
+        "behat/behat": "3.0.*@stable",
+        "behat/mink": "1.6.*@stable",
+        "behat/mink-extension": "2.0.*@stable",
+        "behat/mink-goutte-driver": "1.1.*@stable",
+        "behat/mink-selenium2-driver": "1.2",
+        "composer/composer": "^1.0@alpha",
+        "guzzlehttp/guzzle": "6.1.*@stable",
+        "pantheon-systems/terminus": "0.11.*@stable",
+        "dflydev/embedded-composer": "^1.0@dev"
+    },
+    "config": {
+        "bin-dir": "bin"
+    }
 }