Adding Flask-Redis to the project.

[https://pypi.python.org/pypi/Flask-Redis/0.1.0](https://pypi.python.org/pypi/Flask-Redis/0.1.0)

Initial addition as we think about redis as cache.

app/clients/redis/redis_client.py

@@ -1,22 +0,0 @@
-import redis
-
-
-class RedisClient:
-    def init_app(self, app, *args, **kwargs):
-        self.active = app.config.get('REDIS_ENABLED')
-        self.redis = None
-
-        if self.active:
-            self.redis = redis.StrictRedis(
-                app.config.get('REDIS_HOST'),
-                app.config.get('REDIS_PORT')
-            )
-
-    def set(self, key, value):
-        self.redis.set(key, value)
-
-    def get(self, key):
-        return self.redis.get(key)
-
-    def incr(self, key):
-        return self.redis.incr(key)