Merge branch 'bug/hosts_restart_stunnels' of /home/git/repositories/micah/leap_platform into develop
update stunnel submodule to fix refresh bug #3013

Change-Id: I9ed218d9353c05b34d34c363a6a3f10d54b3a60a
Merge branch 'bug/3013' of /home/git/repositories/micah/leap_platform into develop
Merge branch 'bug/1983' of /home/git/repositories/micah/leap_platform into develop
Update README to guide a user through a basic understanding, and where to go next to get started or report problems

Change-Id: I254e73db7bdbf181bd993d2e9d73e864a62d1112
Copy the current state of the platform documentation into the doc directory.

Originally I thought it would be better to add the leap_doc git repository as a
submodule, but I decided against that:

 . it requires that the user has to start off by initializing submodules,
 something that the leap_cli does for you

 . it would result in more up-to-date documentation than was targeted for this
 release

 . it would result in an unfortunate directory structure (doc/doc/platform).

For these reasons it seemed to me better to put a snapshot of our current
platform documentation into the doc directory right before release. This just
means a step in our release process of refreshing these docs once we have
reviewed them and updated the known-issues for this release.

Change-Id: Ib395ea30553772fd195dd50315f026a2576feedd
Merge branch 'feature/documentation_update' into leap