(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
(TK-43) Fixy query param issue with proxy

Previously, a proxy handler added to a server would crash when
given a query parameter. Fix this issue and add test to validate
it works.
(TK-43) Address comments on PR

Change URI to be a StringBuilder to preserve as much of
old code as possible. Add additional query params test. Further,
change some variable names in tests and docs.
Merge pull request #44 from fpringvaldsen/TK-43-proxy-fails-query-param

(TK-43) Fix query param issue with proxy
(TK-20) Create webrouting service

Create webrouting service with one multi-arity function,
add-context-handler. Add tests for add-context-handler function.
(TK-20) Add remaining handlers to webrouter

Add remaining service handlers to the webrouting service, along
with tests for these service handlers.
(TK-20) Add additional handlers to webrouter

Add additional service functions to the webrouting service
so that services can replace all dependencies on the webserver
service with dependencies on the webrouting service.
(TK-20) Add multiserver support to webrouter

Add multiserver support to webrouter in the form of -to,
-for, and -from functions, which are identical to their
suffix-free forms except that they allow the user to specify a
specific server.
(TK-20) Refactor tests

Refactor tests, moving proxy-related tests and overriding tests
into their own files.
(TK-20) Add partial multi-route support

Add init function to core which supports multi-endpoint
configurations for a single service. Add multi-route support
to context handler service functions.
(TK-20) Implement multi-route support

Implement multi-route support to all handler service functions
for the webrouting service. Also, modify the APIs of all
handler service functions to accomodate this.