Bumped version to 1.2.0.pre
Update README.md
Update README.md
Moved clamav-specific scan result code to clamav adapter.
Remove redundant log message in null adapter.
Merge pull request #5 from duke-libraries/refactor-scan-result

Moved clamav-specific scan result code to clamav adapter.
Bumped version to 1.2.0
Merge branch 'release-1.2'

Conflicts:
	lib/ddr/antivirus/version.rb