Merge pull request #661 from andrerod/dev

644: Returning error for invalid status codes
fix issue with tableservice batch commits not reporting errors correctly
Update version and changelog
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#647: correct readme.md
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Merge pull request #667 from andrerod/release-0.6.12

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Partial fix for table store issues - updated writing of primitive values & dates
Merge pull request #669 from christav/release-0.6.12

Partial fix for table store issues - updated writing of primitive values & dates
668: Fix table serialization
Update changelog
Bump version to 0.7
updating changelog
Merge pull request #665 from shodgson-ms/master

Fix for tableservice batch commit error handling
Merge remote-tracking branch 'upstream/dev' into release-0.6.12