factored out common code;
added analyse_logs script to indicate whether each log in logs/ ends in success or not;
modified cron.sh to call analyse_logs;
the README file will now include the time that the cron script was run;
now producing more visual output: as HTML table with coloured cells;
added FIXME: might need to harden string processing;
cron.sh now produces better-formed HTML;
renamed README to README.html;
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Merge pull request #2 from niksu/sh_issue_factor

factored out common code;
Merge pull request #3 from niksu/build_success

produce visual summary of build outcomes for all targets
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