added mailmap with entry for Adam Ralph
Merge pull request #500 from adamralph/mailmap

added mailmap with entry for Adam Ralph
#499 Updated FakeItEasy to 1.18.0
Merge pull request #501 from blairconrad/499-rebuild-with-fakeiteasy-1.18.0

Fixes #499 Updated FakeItEasy to 1.18.0
Added more email addresses to the .mailmap file.