Merge pull request #141 from zivchang/next

remove testing log
bugfix PTSDK-1413, 1414, changed key due to systemInfo API change
[Content] Modify the implementation of find method.

* JIRA: PTSDK-1227, PTSDK-1228, PTSDK-1334, PTSDK-1336
Merge pull request #142 from wcwang/next

[Content] Modify the implementation of find method.
[bug fix] PTSDK-1399

fixed getAppContext() will fail when called with one parameter