Added memory warning in panama papers notebook demo

container_files/demos/Investigating the Panama Papers.ipynb

@@ -6,8 +6,9 @@
    "source": [
     "# Investigating the Panama Papers\n",
     "\n",
+    "This demo will show how to do simple data exploration using MLDB. We will use the the Offshore Leaks Database from [ICIJ](https://offshoreleaks.icij.org/). It contains data about offshore entities from the Panama Papers and the Offshore Leaks investigations. We will be showing off the capabilities of MLDB's SQL engine and how easy it is to create simple charts using a few external python libraries. Note that even though the data is coming from our servers, no transformation has been made to the original data: all the parsing and transformations are done here using MLDB.\n",
     "\n",
-    "This demo will show how to do simple data exploration using MLDB. We will use the the Offshore Leaks Database from [ICIJ](https://offshoreleaks.icij.org/). It contains data about offshore entities from the Panama Papers and the Offshore Leaks investigations. We will be showing off the capabilities of MLDB's SQL engine and how easy it is to create simple charts using a few external python libraries. Note that even though the data is coming from our servers, no transformation has been made to the original data: all the parsing and transformations are done here using MLDB."
+    "**WARNING**: This demo requires 4GB of memory to run. If you are running this demo on VirtualBox, make sure enough memory is allocated to the virtual machine or MLDB may crash."
    ]
   },
   {