Update README, fix incorrect comment

README.md

@@ -64,7 +64,9 @@ Windows users will want to use the following script:
 1. Determine which Vagrant provider you want to use.
   * Note: Virtualbox is free, the [VMWare Desktop vagrant plugin](https://www.vagrantup.com/vmware/#buy-now) is $80.
 
-  **NOTE:** If you'd like to save time, you can skip the building of the Packer boxes and download the boxes directly from https://detectionlab.network and put them into the `Boxes` directory:
+  #### Warning: As of May 1, 2019 the boxes will only be available from [Vagrant Cloud](https://app.vagrantup.com/detectionlab/)
+
+  If you'd like to save time, you can skip the building of the Packer boxes and download the boxes directly from https://detectionlab.network and put them into the `Boxes` directory:
 
 Provider | Box  | URL | MD5 | Size
 ------------|-----|-----|----|----

Vagrant/bootstrap.sh

@@ -407,9 +407,9 @@ test_suricata_prerequisites() {
 
   # One-off support for packages which aren't installed via dpkg
   echo "[TEST] Validating that yq is correctly installed..."
-  # Loop through each package using which
+  # Check if the binary exists
   if ! [ -f /root/go/bin/yq ]; then
-    # If which returns a non-zero return code, try to re-install the package
+    # If it doesn't exist, try to re-install the package
     echo "[-] yq was not found. Attempting to reinstall."
     /usr/local/go/bin/go get -u github.com/mikefarah/yq
     if ! [ -f /root/go/bin/yq ]; then