Update and rename PRMerge.md to CommitGuideline.md
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Update CommitGuideline.md
fix #242, Add application submitter name so that we can separate the logs for different user
Update CommitGuideline.md
Merge pull request #243 from clockfly/username

fix #242, Add application submitter name so that we can separate the log for different user
fix #225 add logging to different streams for different processes.
Merge pull request #234 from whjiang/logging

fix #225 enable logging to different streams
Fix WordCount Example code
fix #245, remove jacoco due to exception
allow user specify log dir in gear.conf
Merge pull request #246 from whjiang/logging

#225 allow user specify log dir in gear.conf
fix #233 add timeout for interactive messages
Merge pull request #247 from huafengw/timeout

fix #233 Add timeout for interactive messages
 Create readme for external folder
part of #215 Add API resolveAppId
Merge pull request #248 from huafengw/refineAPI

part of #215 Add API resolveAppId