Add new examples to kompose (#1803)

#### What type of PR is this?

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Add one of the following kinds:
/kind bug
/kind documentation
/kind feature
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/kind cleanup

#### What this PR does / why we need it:

Fixes the current broken examples by:

* Removing all the old incompatible ones (we do not really support v3
  anymore or v2... since switching libraries)
* Uses quay.io/kompose/web as our front end example which is a fork of
  the guestbook-go kubernetes examples

#### Which issue(s) this PR fixes:
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*Automatically closes linked issue when PR is merged.
Usage: `Fixes #<issue number>`, or `Fixes (paste link of issue)`.
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Closes https://github.com/kubernetes/kompose/issues/1757

#### Special notes for your reviewer:

Test using docker-compose (you'll see it come up!), then try with
kompose :)

Signed-off-by: Charlie Drage <charlie@charliedrage.com>

docs/maven-example.md

@@ -87,20 +87,20 @@ Now that your service has been deployed, let's access it by querying `pod`, `ser
 ```bash
 $ oc get pods
 NAME                                    READY     STATUS      RESTARTS   AGE
-springboot-docker-compose-1-xl0vb       1/1       Running     0          5m
-springboot-docker-compose-s2i-1-build   0/1       Completed   0          7m
+springboot-compose-1-xl0vb       1/1       Running     0          5m
+springboot-compose-s2i-1-build   0/1       Completed   0          7m
 ```
 
 ```bash
 $ oc get svc
 NAME                        CLUSTER-IP       EXTERNAL-IP   PORT(S)    AGE
-springboot-docker-compose   172.30.205.137   <none>        8080/TCP   6m
+springboot-compose   172.30.205.137   <none>        8080/TCP   6m
 ```
 
 Let's access the Springboot service.
 
 ```bash
-$ minishift openshift service --in-browser springboot-docker-compose
+$ minishift openshift service --in-browser springboot-compose
 Created the new window in existing browser session.
 ```