Add a YAML example.

[brendandburns]

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[ukclivecox]

Typo in docs

-Dexec.mainClass="io.kubernetes.client.examples.YanlExample"

shoule be YamlExample

[ukclivecox]

Running the example as suggested in the code (with typo fixed):

mvn exec:java -Dexec.mainClass="io.kubernetes.client.examples.YamlExample"

gives

[INFO] Building client-java-examples 3.0.0-beta3-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO] 
[INFO] --- exec-maven-plugin:1.6.0:java (default-cli) @ client-java-examples ---
[WARNING] 
java.lang.Error: Unresolved compilation problems: 
	V1PodBuilder cannot be resolved to a type
	V1ServiceBuilder cannot be resolved to a type

	at io.kubernetes.client.examples.YamlExample.main(YamlExample.java:36)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:564)
	at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:282)
	at java.base/java.lang.Thread.run(Thread.java:844)
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------

[brendandburns]

@cliveseldon thanks for the review.

I fixed the typo. Building/running it works for me. Perhaps you need to re-run mvn package install?

Thanks