Initial Commit for Wordpress recipe.

This commit refs #117.
Add dependency on nginx cookbook.

This commit refs #117.
Install wordpress recipe to vm-dev for the testing purpose.
Install prerequisite packages for wordpress.

This commit refs #117.
Add mysql configuration file.

This commit refs #120.
Add mysql configuration file.

This commit aims for /etc/mysql/my.cnf to be under Chef's management.

This commit refs #120.
Deploy the my.cnf to /etc/mysql.

This commit fixes #120.
Merge branch 'id/120' into dev