Addding NUnit.Runners for mono NUnit testing

Mono's built-in nunit-console.exe is broken, but the official exe works.
Forcing mono runtime v4.0.30319 for all tests
Backslash or Forwardslash, why not both?
Ignoring Integration tests that aren't deterministic or have been failing for an unknown time
Fix 'NotRunnable' Tests
Renaming .travis to .mono-build-scripts since we use it for more than travis now
Merge pull request #201 from basho-labs/bug/fix-buildbot-nunit

Fix Buildbot integration, Fix mono nunit tests