add platform tools, fixes #1
add doc
fix support absent for add on, doc, extra, platform, platform tools, sample, system image and version
Merge branch 'feature/issue1' into develop

* feature/issue1:
  fix support absent for add on, doc, extra, platform, platform tools, sample, system image and version
  add doc
  add platform tools, fixes #1
Merge branch 'release/0.0.5'

* release/0.0.5:
  fix support absent for add on, doc, extra, platform, platform tools, sample, system image and version
  add doc
  add platform tools, fixes #1