Added new test jar for catching exceptions fluently

Added 'catch-exception' to allow for fluent exception testing.
Added test case for try / catch of base64

In order to ensure no one removes the try catch around base64 to prevent
unsupported authentication header, added test case using provided sample
using catch-exception in order to ensure the runtime exception received
is as expected.
Updated release notes for test addition
Merge pull request #170 from hazendaz/master

Added test case for base64 try / catch