[ADAM-324] Adding documentation for commit/issue nomenclature and rebasing.
Merge pull request #325 from fnothaft/issue-docs

Adding documentation for commit/issue nomenclature and rebasing
[ADAM-326] Adding a 5-second retry on the HttpRangedByteAccess test.

The AMPLab webserver that is used in the test occasionally hangs?  If so, we catch
the HttpHostConnectException that the Apache lib throws, wait five seconds, and try
once more.