Moves largerapp into patterns dir and add test

- also adds this pattern into tox for testing

examples/patterns/largerapp/setup.py

@@ -0,0 +1,10 @@
+from setuptools import setup
+
+setup(
+    name='yourapplication',
+    packages=['yourapplication'],
+    include_package_data=True,
+    install_requires=[
+        'flask',
+    ],
+)