Move out of view buttons in a corner list (issue #22)
Add camera automation to avoid overlapping buttons (issue #22)
Improve documentation for VTK classes (issue #22)
Some design changes (issue #14)
Merge branch 'Issue#14'

* Issue#14:
  Some design changes (issue #14)
Some design changes (issue #14)
Merge branch 'Issue#14'

* Issue#14:
  Some design changes (issue #14)
Some fix on coding style (issue #14)
Merge branch 'Issue#14'

* Issue#14:
  Some fix on coding style (issue #14)
Some fix on coding style (issue #14)
Merge branch 'Issue#14'

* Issue#14:
  Some fix on coding style (issue #14)
Some fix on coding style (issue #14)
Merge branch 'Issue#14'

* Issue#14:
  Some fix on coding style (issue #14)