Merge pull request #15 from chtyim/feature/v0.1

closed #15 : Moves kafka server into app-master
Update README.md
Update README.md
Update README.md
Merge pull request #17 from chtyim/feature/v0.1

Enhancement and refactoring
Updating docs
Update README.md
Update README.md
Update versions
Merge pull request #20 from chtyim/feature/v0.1

Enhancement and refactoring
Merge pull request #19 from continuuity/develop

Release 0.0.1-rc1
Add release repository
Merge pull request #21 from continuuity/develop

Add release repository
Update version to 0.0.1-rc2
Return the cached controller when lookup with runId.