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Issue #25 Handle buffer under run exception
Added a buffer under run exception for large messages.
The consumer will handle the exception and expand the high water
mark for the partition.
Need tests for fix.
Adds VS2013 generated solution files to ignore.
Merge pull request #29 from Zoltu/vs2013-ignores

Adds VS2013 generated solution files to ignore.
Adds two tests of the buffer underrun exception.

The first test (currently failing) ensures that you get an exception when the length doesn't match the remaining bytes.

The second test ensures that when everything lines up perfectly you get a message out, not an exception.
Merge pull request #30 from Zoltu/buffer-underrun-exception-tests

Buffer underrun exception tests