(TK-35) Update docs

Update docs to reflect new multi-server configuration support.
(TK-35) Add multiserver example

Add a multiserver example app, along with a README explaining how
to run this example app.
(TK-35) Update example list in README

Update example list in README.md to include the WAR and
multiserver example apps.
(TK-35) Clarify limit on number of servers

Make it clear in the jetty-config.md file that the user
is not limited to configuring two servers and can configure
more if desired.
(TK-35) Add link to endpoint schemas

Add a link to the endpoint schemas in the README file.
(TK-35) Clarify :endpoint value

Clarify what the value attached to the :endpoint key in
the endpoint map represents.
(TK-35) Update README to reflect API changes

Update the README file to reflect the new APIs for the various
service functions.
(TK-35) Update multiserver example

Update the multiserver example to reflect the new changes
to the Jetty9 Webserver Service API.
(TK-35) Fix protocol in README

Fix the protocol in the README to match the one defined for the
service.
Merge pull request #39 from fpringvaldsen/TK-35-update-docs

(TK-35) Update Docs