added cron_purge configuration option to module

Added crontab file in case someone changes their mind after setting cron_purge => true.

fixed spec tests for the cron_purge option

Update Gemfile

Adding fix for ruby 1.8.7 i8n gem issue.

Update Gemfile

Update Gemfile

Another 1.8.7 fix.

Update Gemfile

Update Gemfile

Another attempt at fixing the gemfile

Finally got this figured out.
Merge branch 'crontab_purge' of https://github.com/tthayer/puppet-awstats into crontab_purge