Restoring removed modules and adding examples (#794)

Jaxb, Jackson Jaxb and the example projects were removed from the
parent pom file.  Adding them back in so the are managed again.

example-github/pom.xml

@@ -18,12 +18,21 @@
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
+  <parent>
+    <groupId>io.github.openfeign</groupId>
+    <artifactId>parent</artifactId>
+    <version>10.0.2-SNAPSHOT</version>
+  </parent>
+
   <groupId>io.github.openfeign</groupId>
   <artifactId>feign-example-github</artifactId>
   <packaging>jar</packaging>
-  <version>10.0.0-SNAPSHOT</version>
   <name>GitHub Example</name>
 
+  <properties>
+    <main.basedir>${project.basedir}/..</main.basedir>
+  </properties>
+
   <dependencies>
     <dependency>
       <groupId>io.github.openfeign</groupId>

example-wikipedia/pom.xml

@@ -18,12 +18,22 @@
     xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
   <modelVersion>4.0.0</modelVersion>
 
+
+  <parent>
+    <groupId>io.github.openfeign</groupId>
+    <artifactId>parent</artifactId>
+    <version>10.0.2-SNAPSHOT</version>
+  </parent>
+  
   <groupId>io.github.openfeign</groupId>
   <artifactId>feign-example-wikipedia</artifactId>
   <packaging>jar</packaging>
-  <version>10.0.0-SNAPSHOT</version>
   <name>Wikipedia Example</name>
 
+  <properties>
+    <main.basedir>${project.basedir}/..</main.basedir>
+  </properties>
+
   <dependencies>
     <dependency>
       <groupId>io.github.openfeign</groupId>

pom.xml

@@ -28,12 +28,16 @@
     <module>httpclient</module>
     <module>hystrix</module>
     <module>jackson</module>
+    <module>jackson-jaxb</module>
+    <module>jaxb</module>
     <module>jaxrs</module>
     <module>jaxrs2</module>
     <module>okhttp</module>
     <module>ribbon</module>
     <module>sax</module>
     <module>slf4j</module>
+    <module>example-github</module>
+    <module>example-wikipedia</module>
     <!-- remove after feign 10.0 release -->
     <module>java8</module>
     <module>mock</module>