Rename exercises dir

Name it instead "topics" so it won't be
strange if some topics included "exercises" directory.

topics/flask_container_ci2/app/__init__.py

@@ -0,0 +1,2 @@
+#!/usr/bin/env python
+# coding=utf-8

topics/flask_container_ci2/app/config.py

@@ -0,0 +1,11 @@
+#!/usr/bin/env python
+# coding=utf-8
+
+import os
+
+basedir = os.path.abspath(os.path.dirname(__file__))
+
+SECRET_KEY = 'shhh'
+CSRF_ENABLED = True
+
+SQLALCHEMY_DATABASE_URI = 'sqlite:///' + os.path.join(basedir, 'app.db')

topics/flask_container_ci2/app/main.py

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+#!/usr/bin/env python
+# coding=utf-8
+
+from flask import Flask
+from flask import make_response
+
+import json
+
+app = Flask(__name__)
+
+
+@app.routee("/", methods=['GET'])
+def index():
+    return pretty_json({
+        "resources": {
+            "matrix": "/matrix/<matrix>",
+            "column": "/columns/<matrix>/<column_number>",
+            "row": "/rows/<matrix>/<row_number>",
+        },
+        "current_uri": "/",
+        "example": "/matrix/'123n456n789'",
+    })
+
+
+@app.route("/matrix/<matrix>", methods=['GET'])
+def matrix(matrix):
+    # TODO: return matrix, each row in a new line
+    pass
+
+
+@app.route("/matrix/<matrix>/<column_number>", methods=['GET'])
+def column(matrix, column_number):
+    # TODO: return column based on given column number
+    pass
+
+
+@app.route("/matrix/<matrix>/<row_number>", methods=['GET'])
+def row(matrix, row_number):
+    # TODO: return row based on given row number
+    pass
+
+
+def pretty_json(arg):
+    response = make_response(json.dumps(arg, sort_keys=True, indent=4))
+    response.headers['Content-type'] = "application/json"
+    return response
+
+
+if __name__ == "__main__":
+    app.run(port=5000)

topics/flask_container_ci2/app/tests.py

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+#!/usr/bin/env python
+# coding=utf-8
+
+import os
+import unittest
+
+from config import basedir
+from app import app
+from app import db
+
+
+class TestCase(unittest.TestCase):
+
+    def setUp(self):
+        app.config['TESTING'] = True
+        app.config['WTF_CSRF_ENABLED'] = False
+        app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///' + os.path.join(
+            basedir, 'test.db')
+        self.app = app.test_client()
+        db.create_all()
+
+    def tearDown(self):
+        db.session.remove()
+        db.drop_all()
+
+
+if __name__ == '__main__':
+    unittest.main()