Add example for a flux use-case

Author: eberhardtj

example/morph.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<metamorph xmlns="http://www.culturegraph.org/metamorph" version="1">
+  <rules>
+    <data name="name" source="name.value"/>
+    <choose name="lastname">
+    <data source="lastname.value"/>
+    <data source="_id"><constant value="NA"/></data>
+    </choose>
+  </rules>
+</metamorph>

example/process.flux

@@ -0,0 +1,7 @@
+FLUX_DIR + "records.xml"
+| open-file
+| decode-xml
+| handle-generic-xml("row")
+| morph("morph.xml")
+| encode-csv(separator=";", noQuotes="true")
+| print;

example/records.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<rows>
+  <row>
+    <name>alice</name>
+  </row>
+  <row>
+    <name>bob</name>
+  </row>
+</rows>