Modified Vagrantfile to remove sudo from the installation process

Included -a option to encapsulate -emfrti to install all dependencies

Change-Id: Ief864f4c7c69a80cfc47fc1ef195a2842c11011d
refs: #4423, #4404
diff --git a/INSTALL.md b/INSTALL.md
index b8348ed..e908a8b 100644
--- a/INSTALL.md
+++ b/INSTALL.md
@@ -16,7 +16,7 @@
 
 else if you don't have the dependencies, the following command will install them along with Mini-NDN:
 
-    sudo ./install.sh -emrfti
+    sudo ./install.sh -a
 
 else if you want to install the dependencies manually, follow the instructions below: