Update support library r13
Fixed dir not exist
Add getDeviceFeatures
Don't check device ID
Add yixia license
Add gradle file
Update httprequest
Merge branch 'master' of https://github.com/yixia/ZI

# By Crossle Song (5) and Cedric Fung (2)
# Via Crossle Song
* 'master' of https://github.com/yixia/ZI:
  Update httprequest
  Add gradle file
  Add yixia license
  Don't check device ID
  Add getDeviceFeatures
  Fixed dir not exist
  Update support library r13