Add dependency for jcl-over-slf4j.

This fixes an error running the example jersey client.
Convert registerJacksonSupport to protected
Merge pull request #4 from pkwarren/fix_client_issue

Add dependency for jcl-over-slf4j.
Merge pull request #5 from salbito/make_registerJacksonSupport_protected

Convert registerJacksonSupport to protected
preparing README for 0.2.12 release
[maven-release-plugin] prepare release v0.2.12
[maven-release-plugin] prepare for next development iteration
incorrect class used in Logger
adding ursus-scala_2.10.4 and example-scala-application
helper methods for registering scala instances and classes
adding scala support for TCP/UDP NIOApplications
ading support for scala nio applications
[maven-release-plugin] prepare release v0.2.13
[maven-release-plugin] prepare for next development iteration
adding sources for scala
retrying release of 0.2.13
[maven-release-plugin] prepare release v0.2.13
[maven-release-plugin] prepare for next development iteration
retrying to add javadoc to scala projects
reverting to 0.2.13-SNAPSHOT for release