[wrt] Update the cases status of googleplay tcs
Add an introduction to Crosswalk test suite code structure
Update test case priority in developer guide

- P0 is used for usecase tests for feature to be tested
  and API use cases
- Current P0 tests will be changed to P1
[webapi] Add 22 new TCs for webapi-dlna-xwalk-tests
[misc] Change testkit to webrunner in ABAT pack.sh

Unit test result summary: pass 26, fail 3

Signed-off-by: Hao yunfeix <yunfeix.hao@intel.com>
Merge pull request #222 from yxu66x/wrt/android/googleplay

[wrt] Update the cases status of googleplay tcs
[wrt] Add TCs for wrt-googleplay-android-tests
[wrt] Update test steps for Crosswalk_Google_Play_AppUrl
Merge pull request #227 from kangxu/kangxu/wrt/googleplay/add

[wrt] Add TCs for wrt-googleplay-android-tests
Merge pull request #228 from kangxu/kangxu/wrt/googleplay/Crosswalk_Google_Play_AppUrl/updateSteps

[wrt] Update test steps for Crosswalk_Google_Play_AppUrl
[webapi] Update reference path of testharness in websocket-py for wts
[wrt][XWALK-1560] Add 3 cases for opening a file with third part app
[webapi] Update netinfo manual case name
Merge pull request #229 from Honry/Honry/websocket-py-path

[webapi] Update reference path of testharness in websocket-py for wts
[webapi] Add missed image back to canvas
[misc-sanity] Rename sanityapp to usecase
Merge pull request #225 from zqzhang/zqzhang/test-case-priority

Update test case priority in developer guide
Merge pull request #224 from zqzhang/zqzhang/readme

Add an introduction to Crosswalk test suite code structure
Merge pull request #231 from Honry/Honry/canvas-miss-image

[webapi] Add missed image back to canvas
Merge pull request #230 from xinliux/xinliux/webapi/netinfo-manual

[webapi] Update netinfo manual case name