Ignore 414 warnings in framework test projects
Test workaround for xbuild problem
Use nunit-console to run framework tests
Remove references to test harness and refactor
Fix error in .travis.yml
Once again combining Build and Test into a single command - splitting them did not improve the console output.
Remove framework test harness code
Eliminate testing under Silverlight, which we don't currently support; refactor; add error messages; add visible headers in console output
Merge changes from master
Merge pull request #220 from nunit/issue-181

Issue 181 - test-harness is dead, long live nunit-console!
Merge branch 'master' into issue-215