Merge pull request #23 from palli/code-cleanup

Minor code cleanup
New scan
Merge branch 'master' of https://github.com/musalbas/heartbleed-masstest
Add Alexa top 10,000 in one domain per line format
New scan
Adding report showing changes and the program to generate this report. It's in Perl. Live with it.
Merge pull request #24 from qazwart/master

Adding report showing changes and the program to generate this report.
Show changes for top 10k
Show changes for top 10k
Show changes for individual dates
Update README.md
Merge /tmp/heartbleed-masstest into threading-patch

Conflicts:
	README.md
recommit top*txt files
Make ctrl+c work as expected
Update help_text for --summary