Refactor to use models and services in provided JARs.
Add an update method to Dogs API, with validations.
Add dependency jars and load all jars in vendor/jars automatically.
Add support for cows.
Disable threaded mode for now.
Update CatsAndDogs for new services.
Add JAR for connection pool.
Make use of new caching functionality in JCatsAndDogs.  Add convenience method for handling Services.
Updated README.md
Added an administrator role for users with an ID of 2.
Old Changes
Merged mybatis branch to batchAPI branch