Update with Installation video

git-svn-id: https://plugins.svn.wordpress.org/wp-client-client-portals-file-upload-invoices-billing/trunk@897681 b8457f37-d9ea-0310-8a92-e5e31aec5664
Modifying installation video instructions

git-svn-id: https://plugins.svn.wordpress.org/wp-client-client-portals-file-upload-invoices-billing/trunk@897687 b8457f37-d9ea-0310-8a92-e5e31aec5664