add the virtualenv install script

tasks_user/install_virtualenv.py

@@ -0,0 +1,39 @@
+#!/usr/bin/env python3
+import os, sys
+import getpass
+import tempfile
+import subprocess
+
+"""
+Install Virtualenv
+"""
+
+def install_venv():
+    user = getpass.getuser()
+
+    if(user=="root"):
+        raise Exception("You are root - you should run this script as a normal user.")
+    else:
+
+        print("Installing snakemake...")
+
+        pyenvbin = os.environ['HOME']
+        condabin = pyenvbin+"/.pyenv/shims/conda"
+        pipbin = pyenvbin+"/.pyenv/shims/pip"
+
+        print(" - Installing virtualenv")
+        rc = subprocess.call([pipbin,"install","virtualenv"])
+        if(rc != 0):
+            raise Exception()
+
+
+        print("     ~~*~~ ~~*~~ ~~*~~ SUCCESS! ~~*~~ ~~*~~ ~~*~~\n")
+        print("     Snakemake is now installed.")
+        print("     Test that snakemake is working using the following one-liner:\n")
+        print("         virtualenv vp && rm -fr vp")
+        print()
+
+
+if __name__=="__main__":
+    install_venv()
+