added instance types
some fix
modified wp-cli installer url
modified wp-cli install recipe
updates for test-kitchen 1.0.0
add serverspec files
add Cheffile
Revert "add Cheffile"

This reverts commit 1852e034d144678bf78acaff42f53e7216e7e00b.
commented out nfs suite
Merge pull request #21 from OpsRockin/update_for_test_kitchen1.0

updates for test-kitchen 1.0.0
refactoring