Merge pull request #8 from rohitsw/master

Multiple changes
Merge pull request #9 from rohitsw/master

added samples resolves #3
Merge pull request #13 from rohitsw/master

resolves #10 and #11
Merge pull request #15 from rohitsw/master

added utility to generate SPL types resolves #14
Merge pull request #17 from rohitsw/master

added support for arrays . resolves #16
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Merge branch 'master' of github.com:IBMStreams/streamsx.json