fix issue #194: pass valid skus instead of null
merge with master
proper fix for #194 on unity3d-store. query getAllProductIds instead of null.
Merge pull request #45 from lassic/fix194

Fix issue #194 (on unity3d-store)
new commits in submodule
Update changelog.md
Added html tags and changed license to MIT
Merge branch 'docs' of https://github.com/soomla/android-store into docs

* 'docs' of https://github.com/soomla/android-store:
  fix min sdk level to real one (11), plus really update gitignore this time
  add Intellij ignore file
Added docs
a few changes in docs and in readme
Merge branch 'master' into docs

* master:
  Update changelog.md
  new commits in submodule
  proper fix for #194 on unity3d-store. query getAllProductIds instead of null.
  expand example to support testing bulk SKUs
  fix issue #194: pass valid skus instead of null
Changed license back to Apache and added docs for
new functions.
changed README
changed Documentation.md and README
changed Documentation.md
Remove waiting flag after catch an exception.
Merge pull request #46 from HolymarsHsieh/HandleExceptions

Remove waiting flag after catch an exception.
Fixed some documentation issues
Merge branch 'docs'

* docs:
  Fixed some documentation issues
  changed Documentation.md
  changed Documentation.md and README
  changed README
  Changed license back to Apache and added docs for new functions.
  a few changes in docs and in readme
  Added docs
  Added html tags and changed license to MIT
link fix in README