Merge pull request #40 from heltonbiker/master

Adding examples folder

examples/README.md

+Simply run `UsageExamples.py` to see some ways to use `fastkml` library (which should already be [installed](https://github.com/heltonbiker/fastkml#install)).
+
+File `KML_Samples.kml` was found in [Google Developers](https://developers.google.com/kml/documentation/KML_Samples.kml) site.

examples/UsageExamples.py

+#!/usr/bin/env python
+# coding: utf-8
+
+from fastkml import kml
+
+def print_child_features(element):
+    """ Prints the name of every child node of the given element, recursively """
+    if not getattr(element, 'features', None):
+        return
+    for feature in element.features():
+        print feature.name
+        print_child_features(feature)
+
+if __name__ == '__main__':
+    
+    fname = "KML_Samples.kml"
+
+    k = kml.KML()
+
+    with open(fname) as kmlFile:
+        k.from_string(kmlFile.read())    
+
+    print_child_features(k)