added example for Jinja2 templating (#38)

examples/8_html/html.py

@@ -1,5 +1,6 @@
 # examples/8_html/html.py
 from japronto import Application
+from jinja2 import Template
 
 
 # A view can read HTML from a file
@@ -13,12 +14,20 @@ def example(request):
     return request.Response(text='<h1>Some HTML!</h1>', mime_type='text/html')
 
 
+# A view could also return a rendered jinja2 template
+def jinja(request):
+    template = Template('<h1>Hello {{ name }}!</h1>')
+    return request.Response(text=template.render(name='World'), 
+                            mime_type='text/html')
+
+
 # Create the japronto application
 app = Application()
 
 # Add routes to the app
 app.router.add_route('/', index)
 app.router.add_route('/example', example)
+app.router.add_route('jinja2', jinja)
 
 # Start the server
 app.run(debug=True)

tutorial/8_html.md

@@ -1,12 +1,13 @@
 # Responding with HTML
 
-Serving HTML from japronto is as simple as adding a MIME type of `text/html` to the Response.
+Serving HTML from japronto is as simple as adding a MIME type of `text/html` to the Response. Jinja2 templating can be leveraged as well, although in the meantime you will have to do the heavy lifting of rendering templates before sending in a response.
 
 Copy and paste following code into a file named `html.py`:
 
 ```python
 # examples/8_html/html.py
 from japronto import Application
+from jinja2 import Template
 
 
 # A view can read HTML from a file
@@ -20,12 +21,20 @@ def example(request):
     return request.Response(text='<h1>Some HTML!</h1>', mime_type='text/html')
 
 
+# A view could also return a rendered jinja2 template
+def jinja(request):
+    template = Template('<h1>Hello {{ name }}!</h1>')
+    return request.Response(text=template.render(name='World'),
+                            mime_type='text/html')
+
+
 # Create the japronto application
 app = Application()
 
 # Add routes to the app
 app.router.add_route('/', index)
 app.router.add_route('/example', example)
+app.router.add_route('jinja2', jinja)
 
 # Start the server
 app.run(debug=True)