Merge pull request #21 from ypcs/master

Improved documentation.
Merge pull request #22 from ypcs/master

Merge w/ development.
Merge branch 'master' of github.com:digabi/digabi-live

* 'master' of github.com:digabi/digabi-live:
Updated build scripts.
Updated changelog.
Merge branch 'master' of github.com:ypcs/digabi-live

* 'master' of github.com:ypcs/digabi-live:
  Use updated digabi.list, matches version in digabi-repository package.
  Use jessie as Digabi repository distribution.
Updated details about versioning.
Shorter lines. Updated Debian 7.0 (wheezy) to Debian 8.0 (jessie).
Debian wheezy -> jessie.
Added /etc/issue, containing simple instructions for returning to GUI.
Updated message.
"Try to press" to "Try pressing".
Merge branch 'master' into dev

* master:
  Debian wheezy -> jessie.
  Shorter lines. Updated Debian 7.0 (wheezy) to Debian 8.0 (jessie).
  Updated details about versioning.
  Updated changelog.
  Updated build scripts.
Merge branch 'master' of github.com:ypcs/digabi-live

* 'master' of github.com:ypcs/digabi-live:
  "Try to press" to "Try pressing".
  Updated message.
  Added /etc/issue, containing simple instructions for returning to GUI.