Some catch up with changes from rs-mysql.
Checkpoint of README catch up.
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Merge pull request #5 from rightscale-cookbooks/white_14_08_acu163367_shields.io_badges

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REAMDE catch up [skip ci]
Catch up with rs-mysql changes
Fix typo found by Vo
Rename nickname to device_nickname in volume recipe
Merge pull request #6 from rightscale-cookbooks/white_14_07_acu167271_catch_up_with_rs-mysql

Catch up with rs-mysql changes