Merge branch 'fix-docs-june-allies' into 'master'

Update docs to point to june-allies branch of beat.tutorial for install

Closes #150

See merge request !31

doc/install.rst

@@ -26,6 +26,10 @@ Installation Steps
 
    $ git clone https://gitlab.idiap.ch/beat/beat.tutorial.git
 
+#. Checkout the Git branch containing the packer scripts: ::
+
+   $ git checkout june-allies
+
 #. Change directory to the folder holding the scripts: ::
 
    $ cd beat.tutorial/packer_scripts