Merge pull request #113 from tbak/features/examples

Add template example similar to the proxy one.
Rename @Http.path to @Http.uriTemplate.
Merge pull request #115 from tbak/2.x

Rename @Http.path to @Http.uriTemplate.
Changed IClientConfig interface. Move ClientConfigBuilder to be an inner class of IClientConfig. Added example of load balancing using URLConnection.
Merge pull request #116 from allenxwang/2.x-commonclient

IClientConfig related API changes
Add Ribbon transport based example to RX examples.
Write README.md and instructions in javadoc.