Install the libmysqlclient-dev package

This should not be necessary once the soft-launch period is over.
Merge pull request #13 from opscode-cookbooks/bcobb/mysql-libs

Install the libmysqlclient-dev package
Version bump to 2.0.2
Publish 2.0.2 Changelog
Version bump to 2.0.3 (for development)
First stab at making this cookbook multi platform

I know it’s a big PR, but I tested it quite good on both Ubuntu 14.04
and CentOS 6.5 on both of which it now works great… So I hope this can
be merged asap and improvements/fixes can be based on this updated
multi platform code instead of the current Ubuntu only version…
Last few changes needed to make both attributes and a data bag work