Support build-tools
minor upgrade sdk

Minor Upgrade SDK version(21.1 to 22.0.1)
Update README.md
Merge branch 'feature/upgrade' into develop

* feature/upgrade:
  Update README.md
  minor upgrade sdk
Merge branch 'release/0.0.7'

* release/0.0.7:
  Update README.md
  minor upgrade sdk
  Support build-tools